Patents by Inventor Klaus Knapp

Klaus Knapp has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4947420
    Abstract: A selective call communication system for use by an untrained person is provided. The communication system includes a number of telephones located in different locations, connected to a central switching unit. A number of selective call radios, each having an address, are assigned to the central switching unit. Upon the use of the telephone, the central unit identifies the telephone in use, and initiates an alerting call to the corresponding selective call radio automatically. The selective call radios may be pagers or two-way radios. Other features such as radio to radio communication, and radio to telephone network communication may be incorporated into the system.
    Type: Grant
    Filed: April 28, 1989
    Date of Patent: August 7, 1990
    Assignee: Motorola, Inc.
    Inventors: John I. Stahl, David J. Michalak, Klaus Knapp