Patents by Inventor David J. Large

David J. Large 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).

  • Apparatus and method of testing the frequency response of a cable television system
    Patent number: 4700222
    Abstract: Apparatus and method for testing the frequency response of a cable television system by transmitting a test signal of varying frequency over the system. The test signal is transmitted during the blanking intervals between successive frames or lines of the television pictures and at a level comparable to the level of the video signals which carry the information for the pictures.
    Type: Grant
    Filed: May 30, 1985
    Date of Patent: October 13, 1987
    Assignee: Gill Industries, Incorporated
    Inventors: David J. Large, William G. Kostka, Richard A. Wayman