Patents by Inventor John B. Frisone

John B. Frisone 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).

  • Digital data communication network and control system therefor
    Patent number: 4039757
    Abstract: A digital data communication network in which bidirectional communications are established between a central station and plurality of remote terminal devices under control of the central station and in which groups of serially connected terminals are connected in parallel to a simplex link for receiving data signals from the central station and in which one group of serially connections stations is selectively connected to a second simplex link for transmitting, in a predetermined sequence, data signals to the central station.
    Type: Grant
    Filed: May 19, 1976
    Date of Patent: August 2, 1977
    Assignee: International Business Machines Corporation
    Inventor: John B. Frisone