Patents by Inventor Jack L. Bradbery

Jack L. Bradbery 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: 4119810
    Abstract: An electronic telephone apparatus employs a pushbutton key array having multilevel switch contacts and a manually and automatically controlled signalling arrangement for output signalling in both the dial pulse and DTMF (Dual Tone Multifrequency) tone signalling formats. The signalling arrangement includes a memory storage and an automatic sequential dialing circuit to transmit various predetermined combinations of dial pulse trains of one or more digits and tone sequences useful in multiple PABX (Private Automatic Branch Exchange) networks, long haul microwave communication links between distant points and redialing of "found-busy" numbers.
    Type: Grant
    Filed: September 13, 1976
    Date of Patent: October 10, 1978
    Assignee: Phone Devices Corporation
    Inventors: Allan Marin, Jack L. Bradbery