Patents by Inventor Govind R. Gadwal

Govind R. Gadwal 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).

  • Telephone system in which communication between stations is controlled by computers at each individual station
    Patent number: 4262171
    Abstract: A telephone system is provided which requires no central office. All the stations on the system are interconnected by a single line or cable and each station includes a computer which carries out the necessary switching. Each station is then able to call any other station, or to respond to a call, without requiring any central office. Frequency division multiplexing is used to permit a number of conversations to be carried on simultaneously and two frequencies are assigned to each conversation to permit duplex operation. A page capability is also provided.
    Type: Grant
    Filed: January 8, 1979
    Date of Patent: April 14, 1981
    Assignee: Catalyst Research Corporation
    Inventors: Alan A. Schneider, Govind R. Gadwal