Patents by Inventor William C. Fizer

William C. Fizer 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).

  • Data signalling unit for telephone systems
    Patent number: 3987247
    Abstract: A data signalling system for in-house telephone systems of either the rotary dial or the tone dial type responds to conventional digit defining dial signals.Control gates respond to conventional trunk relay signal patterns to trigger various logic functions in conjunction with trunk seize, dialing and hang-up.A numeric printer is fed digital signals from logic circuitry which has accumulated and stored the dialed data and is capable of presenting numeric and alpha display.
    Type: Grant
    Filed: December 12, 1975
    Date of Patent: October 19, 1976
    Assignee: American Motor Inns, Inc.
    Inventor: William C. Fizer