Patents by Inventor Frank L. Van Gilluwe

Frank L. Van Gilluwe 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).

  • Microprocessor controlled telephone unit
    Patent number: 4677661
    Abstract: A telephone unit having a plurality of lines which connect to a PBX and having a microprocessor which transmits and receives data over a digital line between telephone units associated in a group such that a direct forwarding feature is controlled by the microprocessor altering the ring arrangement among the telephones in the group. The telephone unit also has a speakerphone which is controlled by the microprocessor. Each telephone unit has means for monitoring the status of the lines associated with it and providing data to the microprocessor as to line status.
    Type: Grant
    Filed: October 7, 1983
    Date of Patent: June 30, 1987
    Assignee: Baccaret Teledex, Inc.
    Inventors: Frank L. van Gilluwe, Samuel B. Dunham, Douglas A. Cross
  • Telephone line selector for use with a PBX
    Patent number: 4626627
    Abstract: A device for use with executive and secretarial telephone units associated in a work group, having a programmable microprocessor which selectively controls the connection of incoming telephone lines to the secretarial telephone units and monitors the status of the telephone lines and provides such information to the secretarial telephone units.
    Type: Grant
    Filed: October 7, 1983
    Date of Patent: December 2, 1986
    Assignee: Teledex
    Inventors: Frank L. Van Gilluwe, Samuel B. Dunham, Douglas A. Cross
  • Telephone console
    Patent number: D283507
    Type: Grant
    Filed: November 10, 1983
    Date of Patent: April 22, 1986
    Assignee: Teledex
    Inventor: Frank L. Van Gilluwe