Patents by Inventor Charles L. Coleman

Charles L. Coleman 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: 4562436
    Abstract: A mechanized system distributing the access, test and communication functions to the pont of testing, typically the centralized switching facility serving the telephone loops and equipment to be tested. Computer (200) stores information about each subscriber loop in the geographical area served by a system. Front-end computers (220,221) interact with computer (200) to retrieve pertinent data regarding loops to be tested. Each switching facility in an area includes a loop testing system (e.g., 160) that implements the required functions. The communication functions residing in front-end computers (220,221) and loop testing systems (160,161) are coupled via a data communication network (140) in a manner that allows any front-end computer to communicate with any loop testing system. Users of the system control access and test from consoles having the capability of establishing independent communication paths over the national dial network for interactive tests in loops accessed through standard test trunks.
    Type: Grant
    Filed: July 16, 1982
    Date of Patent: December 31, 1985
    Assignee: AT&T Bell Laboratories
    Inventors: Charles L. Coleman, Harvey Rubin