METHODS AND APPARATUS FOR EXPOSING WORKFLOW PROCESS DEFINITIONS AS BUSINESS OBJECTS
The present disclosure provides methods and apparatuses for exposing a workflow processes definition as a business object. Using the methods and apparatus herein, users can access a business object representing a workflow process definition from any system using standard database constructs. The data for the business object may be combined from a variety of existing sources and/or new data. Using the methods and apparatus a user may generate reports from the business object.
The present application is a continuation of, claims priority to and the benefit of U.S. patent application Ser. No. 12/117,455, titled “METHODS AND APPARATUS FOR EXPOSING WORKFLOW PROCESS DEFINITIONS AS BUSINESS OBJECTS”, filed on May 8, 2008, which claims priority to and the benefit of U.S. Patent Application No. 60/916,706, titled “METHODS AND APPARATUS FOR REPRESENTING BUSINESS PROCESS INFORMATION AS BUSINESS ENTITIES”, filed on May 8, 2007 and U.S. Patent Application No. 60/939,270, titled “METHODS AND APPARATUS FOR EXPOSING WORKFLOW AND PROCESS DEFINITIONS AS BUSINESS OBJECTS”, filed on May 21, 2007, the entire contents of which are incorporated herein by reference.
BACKGROUNDAs the number of information sources in organizations are growing, it is becoming increasingly difficult for consumers of the information to access it in a logical and structured way that relates to the traditional business objects they find familiar within their organizations (e.g., customers, assets, vendors, staff, etc). Data from existing systems is typically made available in a technical way that requires significant technical and development skills to surface it to non-technical users in the organization. A workable mechanism is needed for non-technical users to add information within a logical business object definition without involving technical or development skills. Similarly, a workable solution is needed to allow both technical and non-technical users of data to access their information from multiple data/information sources in a structured business object like way, while still maintaining the flexibility to add additional information definitions to the existing business objects or to create new business objects from existing or new data sources without the need for complex solution development.
Existing Enterprise Application Integration (EAI) systems combined with development tools can be used to develop custom solutions which make data and information more accessible, but these solutions are hard-coded and require significant technical and development skills to maintain and change over time. Non-technical users need a workable way to change the definition of the structured data (business objects) or to add additional information sources or fields within existing business object definitions that might already exist within their organizations. For example, customer information might exist in a CRM system, ERP system and a custom issue tracking system. Existing EAI solutions assist in integrating data between these systems, but do not provide a mechanism to see a single definition of a customer as a logical business object regardless of where the information is being sourced from.
In addition, information workers are limited by the static business forms and information presented to them by the solution applications or custom developed applications they use on a day-to-day basis. Regardless of whether these forms are thin client (web or browser) based or thick/smart client (windows forms) based, the information worker's ability to add additional information on-demand to existing forms based on its current state and context, is extremely limited. Existing form technologies depend on a developer's involvement to bind the form to a data source (web service, database, etc) which populates the form with information based on a user event (click of a button, etc). Should the end user require additional information to be displayed on the form, he needs to rely on application specific pre-developed functionality that might allow him to see additional information or data fields on the forms. This implementation however depends on the logic encapsulated in the application or custom developed solution.
Still further, existing process automation tools do not provide the necessary level of modeling tools and concepts to allow both technical and non-technical users to author a completed business process solution in a single modeling/automation tooling environment. It is extremely difficult for business analysts, business/process owner's technical people to use a single solution which allows for all roles to work seamlessly together to rapidly discover, model and automate business processes within organizations. Existing workflow and business process automation tools are disconnected and do not allow for a single environment which brings technical and non-technical business users together with a set of tools that deeply integrate the necessary building blocks.
SUMMARYThe disclosed system uses Enterprise Application Integration (EAI) sources (e.g., EAI software, Web Services, Application API) to provide a higher level framework (e.g., runtime broker and adapter services) with related solution components (e.g., user interfaces and tooling) which empowers technical and non-technical users to author logical business objects that include data definitions (e.g., customer name, surname, etc) and actions or methods (e.g., save, load, delete) from existing and/or new data sources. Existing data sources include ERP, CRM, and/or custom developed systems in an organization. New data sources are created and maintained by the disclosed system. The system allows users to combine data from multiple sources into one single business object definition, including data and method/actions definitions. The new logical business object exposes a single logical data structure and view of the object as well as a single set of logical methods that are associated with the object. For example, the logical business object may implement standard SQL methods such as INSERT, UPDATE, SELECT, DELETE, etc. The methods may act as stored procedures to external interfaces and can take parameters to manipulate the data result sets. For example, the INSERT method may take a number of parameters for the INSERT operation to execute.
The object broker interprets the new object definition and brokers data/information and method calls to the data sources (or existing systems). Additional fields can be added to the new object definition. These additional fields are associated with unique identifiers from the other data sources included in the new object definition. Data structures and actions (e.g., insert, update, select, delete as examples) are managed by the object broker. The actual data is stored in native format of the data store it originates in and is not duplicated. The object broker creates a dynamic business object whose definition can be changed by either adding or removing data or actions without the need to involve technical or development resources to reconfigure or recompile the actual objects.
Existing systems are accessed through a service object component. The service object for a specific back-end system implements the base interface expected by the object broker. This enables the object broker to use a consistent communication mechanism to exchange data and function calls with the applications it is integrating. The object broker, together with the service object interface, provides the underlying infrastructure to exchange data, method calls and participation in supporting services such as transactions, compensations models, exception handling and role/security management. The object broker also includes a single-sign on implementation, which allows the object broker to use a single credential set to access multiple systems (each with their own authentication model).
The disclosed system also facilitates the creation of automated business processes by both technical and non-technical users. Business process design typically utilizes two main elements of information that are part of the design time and run time process information, the process instance data, or the actions that were taken in the process, and the object data that is associated with the process instance. The object data that is used in a business process may be represented by the logical business objects. By abstracting the business process data as logical business objects, the system allows the user to access or alter the information without needing to write code or complex database queries. The logical business objects associated with a business process can be edited and created in a similar manner to all other logical business objects.
Additional features and advantages are described herein, and will be apparent from, the following Detailed Description and the figures.
The present system is most readily realized in a network communications system. A high level block diagram of an exemplary network communications system 100 is illustrated in
The data sources 108 store a plurality of files, programs, and/or web pages in one or more databases 112 for use by the client devices 102. For example, a data source may store customer information. The data sources 108 may be connected directly to a database server 110 and/or via one or more network connections.
One data source 108 and/or one object broker server 114 may interact with a large number of other devices. Accordingly, each data source 108 and/or one object broker server 114 is typically a high end computer with a large storage capacity, one or more fast microprocessors, and one or more high speed network connections. Conversely, relative to a typical server, each client device 102 typically includes less storage capacity, a single microprocessor, and a single network connection.
A more detailed block diagram of the electrical systems of a computing device (e.g., handheld client device 102, personal computer client device 102, router 106, database server 110, and/or object broker server 114) is illustrated in
The example computing device 102, 106, 110, 114 includes a main unit 202 which preferably includes one or more processors 204 electrically coupled by an address/data bus 206 to one or more memory devices 208, other computer circuitry 210, and one or more interface circuits 212. The processor 204 may be any suitable processor, such as a microprocessor from the INTEL PENTIUM® family of microprocessors. The memory 208 preferably includes volatile memory and non-volatile memory. Preferably, the memory 208 stores a software program that interacts with the other devices in the system 100 as described below. This program may be executed by the processor 204 in any suitable manner. The memory 208 may also store digital data indicative of documents, files, programs, web pages, etc. retrieved from another computing device and/or loaded via an input device 214.
The interface circuit 212 may be implemented using any suitable interface standard, such as an Ethernet interface and/or a Universal Serial Bus (USB) interface. One or more input devices 214 may be connected to the interface circuit 212 for entering data and commands into the main unit 202. For example, the input device 214 may be a keyboard, mouse, touch screen, track pad, track ball, isopoint, and/or a voice recognition system.
One or more displays, printers, speakers, and/or other output devices 216 may also be connected to the main unit 202 via the interface circuit 212. The display 216 may be a cathode ray tube (CRTs), liquid crystal displays (LCDs), or any other type of display. The display 216 generates visual displays of data generated during operation of the computing device 102, 106, 110, 114. For example, the display 216 may be used to display web pages received from the object broker server 114 including data from multiple data sources 108. The visual displays may include prompts for human input, run time statistics, calculated values, data, etc.
One or more storage devices 218 may also be connected to the main unit 202 via the interface circuit 212. For example, a hard drive, CD drive, DVD drive, and/or other storage devices may be connected to the main unit 202. The storage devices 218 may store any type of suitable data.
The computing device 102, 104 may also exchange data with other network devices 220 via a connection to the network 116. The network connection may be any type of network connection, such as an Ethernet connection, digital subscriber line (DSL), telephone line, coaxial cable, etc. Users of the system 100 may be required to register with one or more of the computing devices 102, 106, 110, 114. In such an instance, each user may choose a user identifier (e.g., e-mail address) and a password which may be required for the activation of services. The user identifier and password may be passed across the network 116 using encryption built into the user's web browser. Alternatively, the user identifier and/or password may be assigned by the computing device 102, 106, 110, 114.
In one embodiment, a user at a client device 102 views and/or modifies data from a plurality of different data sources 108 via an interactive electronic form. An example block diagram showing connections between a plurality of data sources 108 and an electronic form 302 via an object broker process 304 is illustrated in
In this example, the data sources 108 include an enterprise resource planning (ERP) data source 314, a customer relationship management (CRM) data source 316, a custom data source 318, an add-on data source 320, and a function data source 322. In addition, a role service 323 and an object data store 325 are included in the system 300. Typically, an ERP data source 314 stores data related to accounts receivable, accounts payable, inventory, etc. Typically, a CRM data source 316 stores data related to leads, quotes, orders, etc. A custom data source 318 is a data source 108 that is not considered a standard commercial product. For example, a business may have a custom data source that stores real-time manufacturing information. Some data sources 108 may use an intermediary server for communications. For example, the ERP data source 314 may use a BizTalk server 324.
The add-on data source 320 stores data associated with form fields added by the user that are not supported by one of the other data sources 108. For example, a business may start up a frequent shopper card program and need to store a card number for each participant. Accordingly, a user may add a frequent buyer number field to an existing form containing legacy data. Because the existing data sources 108 in this example do not include a frequent buyer number field, the frequent buyer number field and associated data are stored by the add-on data source 320.
In order to manipulate data in a particular data source 108, the object broker process 304 preferably calls methods built into the associated data source 108. For example, each data source 108 typically includes methods to store/retrieve data to/from the data source 108 (e.g., the CRM data source may support a “LoadContact” method as described in detail below). In addition, the system 300 allows a user to author their own functions. For example, a user may need to apply a discount to certain customers. However, the existing data sources 108 may not include a method to calculate the discount. Accordingly, the user may author a “CalcDiscount” function as described below. User defined functions may use data from more than one data source 108. The definitions for these user defined functions is then stored in the function data source 322.
User defined functions may be created using a graphical user interface tool. For example, parameters for a user defined function may be defined by selecting a graphical representation of the parameter associated with a business object. Preferably, user defined functions are stored as snippets. Snippets include a structure portion that defines the function and a user interface portion that provides the user a way to test the function. For example, the structure portion may be stored as XML, and the user interface portion may be stored as HTML in the same file.
Some user defined functions may be executed by the client devices 102 thereby reducing communication with the servers 110, 114. Other user defined functions may require server side execution. Preferably, a determination is made if a particular function is to be executed on the client side or on the server side, and an indicator of this determination is stored with the function snippet. For example, user defined functions built from certain predefined primitives (e.g., add, multiply, loop, less than, etc.) may be determined to be executable by the client device 200, while other user defined functions that include database lookups (e.g., SQL statements) may be determined to be executable by a server 110, 114.
From a user's perspective, the data from the data sources 108 (as well as data calculated from data in the data sources 108 e.g., a discount) is viewed using one or more electronic forms 302, 310, 312. In addition, the user may manipulate the data and/or add data via the electronic forms 302, 310, 312. Forms 302, 310, 312 may be combined into pages 302 and one form may use data from more than one data source 108. For example, the customer orders page 302 combines the customer contact form 310 and the order list form 312 (as described in detail below with reference to
In order to facilitate forms 302, 310, 312 that combine data from different data sources 108, the system 300 employs an object broker process 304 and a form process 326. In one embodiment, the object broker process 304 is ASP code running on the object broker server 114 and the form process 326 is JavaScript running on a client device 102. The object broker process 304 compiles data in a variety of different native formats from the different data sources 108 into standardized business objects 306, 308 (e.g., XML files). In addition, the object broker process 304 accepts the data via the business objects 306, 308 and stores the data back to the data sources 108 in the correct native format.
More specifically, the object broker process 304 uses a plurality of broker services to communicate with the data sources 108. Preferably, one broker service is used for each data source 108. In this example, the object broker process 304 includes an ERP broker service 328, a CRM broker service 330, a custom broker service 332, an add-on broker service 334, and a function broker service 336. Each broker service 328, 330, 332, 334, 336 is designed to communicate with the associated data source 108 using the data source's native formats and protocols.
Each broker service 328, 330, 332, 334, 336 then automatically exposes the properties and methods of the associated data source 108 as standardized properties and methods 338 for use by the business objects 306, 308. For example, the ERP broker service 328 communicates with the ERP data source 314 via the BizTalk server 324 and exposes the ERP data source 314 properties and methods to the customer business object 306 and the order business object 308 as XML files. If new properties and/or methods become available from a data source 108, the associated broker service preferably detects these new properties and/or methods and automatically exposes the new properties and/or methods for use by the business objects 306, 308. The business objects 306, 308 may include some or all of the exposed properties and methods 338. Each business object 306, 308 then exposes its included properties and methods 340 to the form process 326.
The form process 326 calls business object methods 340 in response to form events and populates the forms 302, 310, 312 with data from the business object properties 340. For example, a user may press a “Load” button on the customer orders page 302, which causes the form process 326 to call one or more methods 340 exposed by the business objects 306, 308. This, in turn, causes the object broker process 304 to retrieve the appropriate data from one or more data sources 108. The data is then returned as properties of the business objects 306, 308, and the form process 326 uses the data to populate the forms 310, 312.
In addition, the form process 326 may store values to the business object properties 340, and call methods to have the new/modified data stored back to the appropriate data source 108 via the object broker process 304. For example, a from may accept a new value for a customer's address and call an UpdateContact method to have the new address stored to the appropriate data source 108. The form allows the user to update the customer's address without knowledge of the underlying data source 108.
The form process may 326 may call methods that implement standard SQL methods such as INSERT, UPDATE, SELECT, DELETE, etc. The methods act as stored procedures to external interfaces and can take parameters to manipulate the data resultsets. For example, the INSERT method may take a number of parameters for the INSERT operation to execute.
Additionally, a business object may represent data associated with a business process. For example, a business process data surfacing module on the object broker server may create a business object exposing the business process data as a standard database construct. The business process data surfacing module may take a business process and create a business object entity wrapper encapsulating the business process data as well as business process objects in a single entity.
By exposing a business process as a business object with standard database operations, the business process user is able to perform functions on the workflow process such as reporting or building client applications.
A more detailed block diagram showing these connections between the example data sources 108 and the example business objects 306, 308 is illustrated in
These logical connections are maintained by the object broker process 304. For example, data to populate the customer contact form 310 and the order list form 312 may be brought into the customer business object 306 and the order business object 308 from the data sources 108 by the object broker process 304. Similarly, new and modified data from the customer contact form 310 and the order list form 312 may be sent from the customer business object 306 and the order business object 308 to the data sources 108 by the object broker process 304. In addition, the role service 323 may generate a reduced object definition based on these full object definitions. For example, the role service 323 may retrieve a role associated with a particular user and a plurality of authorized properties and/or methods associated with that role. Unauthorized properties and/or methods are then removed from the business object definition (e.g., a particular user is not allowed to write to the customer business object, therefore the UpdateBalance and UpdateContact methods are removed).
The example customer business object 306 includes a customer ID property, a name property, an address property, an outstanding balance property, a load balance method, an update balance method, a load contact method, and an update contact method. The customer ID property in the customer business object 306 is connected to the customer ID property in the ERP data source 314 and/or the customer ID property in the CRM data source 316. The name property and the address property in the customer business object 306 are connected to the name property and the address property in the CRM data source 316. The outstanding balance property in the customer business object 306 is connected to the outstanding balance property in the ERP data source 314. The load balance method and the update balance method in the customer business object 306 are connected to the load balance method and the update balance method in the ERP data source 314. The load contact method and the update contact method in the customer business object 306 are connected to the load contact method and the update contact method in the CRM data source 316.
The example order business object 308 includes an order number property, a customer ID property, a delivery date property, a tax property, a total property, a status property, a create order method, a load orders method, an update order method, a delete order method, a calc discount method, and a calc tax method. The order number property and the status property in the order business object 308 are connected to the order number property and the status property in the ERP data source 314. The customer ID property in the order business object 308 is connected to the customer ID property in the ERP data source 314 and/or the customer ID property in the add-on data source 320. The delivery date property, tax property, and total property in the order business object 308 are connected to the delivery date property, tax property, and total property in the add-on data source 320. The create order method, load orders method, update orders method, and delete order method in the order business object 308 are connected to the create order method, load orders method, update orders method, and delete order method in the ERP data source 314. The calc discount method and the calc tax method in the order business object 308 are connected to the calc discount method and the calc tax method in the function data source 322. It will be appreciated that the names of the properties and/or methods in the data sources 108 need not be the same as the corresponding names of the properties and/or methods in the business objects 306, 308.
A screenshot of an example process is presented in
Most processes consist of a number of activities and events. Some events may require input from a user and are called events. Other events can be executed without any user interaction and are called server events. Process 500 has three activities, Order Approval 502, Order Approved 504 and Order Declined 506. Activities may have associated events. For example, the Order Approval 502 activity has an associated event Approve Order 508. Events are categorized based on the entity that performs the event, for example, the Approve Order 508 event is an event.
Events may have actions. For example, the Approve Order 508 event has actions “Approved” 510 and “Declined” 512. As with business processes, activities can have data associated with the scope of that activity. For example, the Approve Order 508 event may have an “Order ID” that is defined as data at the process level.
When a process is deployed, logical business objects (“business entities”) may be created for the process itself and for each event in the process. For example, when deployed, process 500 may have a business object created for the process 500 and for the Approve Order 508 event.
A screenshot of an example business object model is presented in
If data is defined on the business process level, that data may become a property for all business entities (e.g., the process business object and the event business entities). For example, if “Order ID” is defined as data on the process level, it may become an “Order ID” property 606 in the Order Approval Process Business object 602 and the Approve Order Business object 604, where the Order Approval Process Business object 602 is associated with the overall business process and the Approve Order Business object 604 is associated with the Approve Order event 508.
A screenshot of an example data flow model is presented in
The data flow may begin with the design process (block 702). For example, required data may be identified during the initial design of the business process. The data flow may then continue to the deploy process (block 704). For example, at runtime the required data may be determined.
A business object method may be created for each process action (block 706). For example, each business process action a business object method may be created. The Order Approval Process Business object 602 may have a Start Order Approval method created for the Start Approval activity, as seen in
A business object may be created for each event as well (block 710). For example, an Approve Order 508 event may have its own business object created for it. As with the business process business object, each event action may have a business object method created (block 712). Each process level data field may be a business object property (block 714), and each activity level data field may be a business object property (block 716). For example, in the Approve Order Business object 604, a process level data field may be “Order ID” and an activity level data field may be “Activity Start Date” which is localized to the event business object.
A screenshot of an example deployment screen is presented in
When the process is deployed, the user may be given a choice to generate business entities during the deployment of the process or to generate the business entities manually after deployment. For example, the user may be presented with an option 802 to create the business object, or “Workflow SmartObject.”
A screenshot of an example workflow screen 900 is presented in
The workflow screen 900 may contain a workflow object, or a plurality of workflow objects, such as tasks, events, activities, etc. The workflow may be stored in the data sources 108.
A screenshot of an example business entity selection screen 1000 is presented in
The business entity selection screen 1000 may be based on workflow processes stored in the data sources 108. The business entity selection screen 1000 may have a business entity listing 1002. The business entity listing 1002 shows all available business processes. The business entity selection screen 1000 may also have a related data window 1004. The related data window shows data from the business entity that is selected on the business entity listing 1002 as well as any related business entities. For example, a workflow process, represented as a Business object, may make use of other business objects as part of the business process. A workflow process that deals with Customer information may have an associated business object for a Customer that has read/write interactions throughout the business process runtime. The associated business object will also be presented in the related data window 1004 and be available for reporting and external client application access. Since all business objects can be represented as standard database constructs, the business user is not limited to just working with workflow data.
A screenshot of an example data selection screen 1100 is presented in
The data selection screen 1100 allows the user to select specific data elements to report on. The data selection screen 1100 may include report data listing 1102 and reporting window 1104. By using the data selection screen 1100, the user can create detailed reports on the data that the user wishes to monitor. The data selection screen 1100 provides a front end interface to the business entities and an interface for performing database operations on the business entities.
A screenshot of an example workflow process overview screen 1200 is presented in
The workflow process overview screen 1200 contains a workflow process listing 1202. The workflow process listing 1202 shows all of the running processes on an object broker server 114 or another server executing a business process.
A screenshot of an example process instances report screen 1300 is presented in
The process instances report screen 1300 contains a workflow instance listing 802. The workflow instance listing 1302 shows all of the running instances of a given type of business entity. It will be appreciated that many other reports are possible. For example, Process and Activity detail reports.
A screenshot of an example view flow screen 1400 is presented in
The view flow screen 1400 includes a workflow process view. The workflow process view may include colored workflow process objects 1402 showing completed process steps. The workflow process view may also include a colored workflow process object 1404 showing the current workflow process step. In this way, the user can determine where in the process the data is from. The view flow screen 1400 also allows the user to transition between the standardized database construct view and the workflow process view.
In summary, persons of ordinary skill in the art will readily appreciate that inventive methods and apparatus related to automated workflows and forms have been disclosed. The foregoing description has been presented for the purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the exemplary embodiments disclosed. Many modifications and variations are possible in light of the above teachings. It is intended that the scope of the invention be limited not by this detailed description of examples, but rather by the claims appended hereto.
Claims
1. A method for exposing a workflow process definition as a business object, the method comprising:
- creating a workflow process, wherein the workflow process includes workflow data;
- executing the workflow process; and
- creating a business object based on the workflow process, wherein the business object includes a database interface for accessing the workflow data and wherein the business object includes data from a first source in a first format and data from a second source in second format.
2. The method of claim 1, wherein the workflow data includes a first data from a first back end system and a second data from a second back end system.
3. The method of claim 1, wherein the database interface includes an Insert, an Update, a Select, and a Delete method.
4. The method of claim 1, including creating a report on the business object.
5. The method of claim 1, including retrieving the workflow process data and an associated workflow process step from the business object.
6. The method of claim 1, including creating custom methods associated with the business object.
7. The method of claim 1, including creating a new data store for storing new data, wherein the new data is associated with a new data field created in the business object and the new data field is not located in an existing data store.
8. A system for exposing a workflow process definition as a business object, the system comprising:
- a processor: creating a workflow process, wherein the workflow process includes workflow data; executing the workflow process; and creating a business object based on the workflow process, wherein the business object includes a database interface for accessing the workflow data and wherein the business object includes data from a first source in a first format and data from a second source in second format.
9. The system of claim 8, wherein the workflow data includes a first data from a first back end system and a second data from a second back end system.
10. The system of claim 8, wherein the database interface includes an Insert, an Update, a Select, and a Delete method.
11. The system of claim 8, including creating a report on the business object.
12. The system of claim 8, including retrieving the workflow process data and an associated workflow process step from the business object.
13. The system of claim 8, including creating a custom method associated with the business object.
14. The system of claim 8, including creating a new data store for storing new data, wherein the new data is associated with a new data field created in the business object and the new data field is not located in an existing data store.
15. A computer readable medium storing a program to causing a computer system to:
- create a workflow process, wherein the workflow process includes workflow data;
- execute the workflow process; and
- create a business object based on the workflow process, wherein the business object includes a database interface for accessing the workflow data and wherein the business object includes data from a first source in a first format and data from a second source in second format.
16. The computer readable medium of claim 15, wherein the workflow data includes a first data from a first back end system and a second data from a second back end system.
17. The computer readable medium of claim 15, wherein the database interface includes an Insert, an Update, a Select, and a Delete method.
18. The computer readable medium of claim 15, including creating a report on the business object.
19. The computer readable medium of claim 15, including retrieving the workflow process data and an associated workflow process step from the business object.
20. The computer readable medium of claim 15, including creating a custom method associated with the business object.
Type: Application
Filed: Oct 26, 2020
Publication Date: Apr 8, 2021
Inventors: Adriaan van Wyk (Snoqualmie, WA), Pieter Janson (Centurion), Wynand Coenraad Du Toit (Johannesburg), Jacobus Hendrik du Preez (Snoqualmie, WA)
Application Number: 17/079,950