Patents by Inventor Robert Patrick Logan

Robert Patrick Logan 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).

  • Contrast, brightness and peaking control circuit
    Patent number: 3969579
    Abstract: A secondary control circuit including contrast control, brightness control, and a peaking circuit means are all disposed on a printed circuit board and coupled into the video circuit of a television receiver by one pair of connectors.
    Type: Grant
    Filed: November 21, 1975
    Date of Patent: July 13, 1976
    Assignee: GTE Sylvania Incorporated
    Inventors: Robert Patrick Logan, Robert Charles Wheeler