Patents by Inventor Eugene H. Gavenman

Eugene H. Gavenman 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).

  • Teleconferencing system
    Patent number: 4878242
    Abstract: The teleconferencing system includes three or more audiographic teleconferencing terminals where any one of the terminals can act as a sending terminal and/or a receiving terminal during a teleconferencing session. Each terminal includes means for establishing a broadcast and listen protocol that permits a sending terminal to transmit a facsimile image to multiple receiver terminals simultaneously.
    Type: Grant
    Filed: July 22, 1987
    Date of Patent: October 31, 1989
    Assignee: Ricoh Corporation
    Inventors: Robert M. Springer, Richard L. Schmal, Eugene H. Gavenman