Patents by Inventor Francis Charles Hackett-Jones

Francis Charles Hackett-Jones 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: 4010331
    Abstract: A telephone intercommunication system where a plurality of stations have access to a plurality of lines. Each station has a pushbutton type keyset which is connectible to integrated circuits associated with each line and are utilized and generate signals for controlling central office switching equipment.
    Type: Grant
    Filed: March 28, 1975
    Date of Patent: March 1, 1977
    Assignee: GTE International Incorporated
    Inventors: Michael Geoffrey Cleeve Taylor, Bloomfield James Warman, Francis Charles Hackett-Jones