Patents by Inventor Margaret L. Martin

Margaret L. Martin 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).

  • Methods of establishing a switching connection within a switching system
    Patent number: 4415773
    Abstract: A PBX system (20) receives a predetermined number of dialing digits from a central office which represents a subscriber station interconnected within the system. The system (20) adds a pseudo digit to the dialing digits to facilitate: (1) the use of a full compliment of dialing digits; and (2) the establishment of a switching connection with the subscriber station. The pseudo digit is then removed and the remaining dialing digits are translated into an equipment location for the subscriber station. Thereafter the switching connection is established with the subscriber station.
    Type: Grant
    Filed: October 29, 1981
    Date of Patent: November 15, 1983
    Assignee: Western Electric Company, Inc.
    Inventor: Margaret L. Martin