Patents by Inventor Douglas W. Justice

Douglas W. Justice 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).

  • Active repeater antenna assembly
    Patent number: 5600333
    Abstract: An active repeater assembly for in-vehicle use of personal communication devices is both simple and reliable. The assembly includes an RF amplifier coupled to first and second antennas, and is characterized by the total absence of removable coaxial connectors between the antennas and the amplifier. The outside antenna is an on-glass device, mounted on the opposite side of the same window. Oscillation is prevented by the provision of electromagnetic shielding between the inside and outside antennas.
    Type: Grant
    Filed: January 26, 1995
    Date of Patent: February 4, 1997
    Assignee: Larsen Electronics, Inc.
    Inventors: Douglas W. Justice, Damon L. Patton