Patents by Inventor John C. Pleska

John C. Pleska 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).

  • Speakerphone telephone answering machine
    Patent number: 4689813
    Abstract: A telephone answering machine which includes a speakerphone feature to enable the user to converse directly with a calling party through the machine. A microphone and a speaker are included in the machine together with interconnecting circuitry which may be activated by the user upon the receipt of a telephone call to enable the user to communicate with the calling party through the machine instead of having the calling party record his message on the machine in response to a recorded announcement.
    Type: Grant
    Filed: November 13, 1984
    Date of Patent: August 25, 1987
    Assignee: Fortel, Inc.
    Inventors: John C. Pleska, Gerald L. Mock