Patents by Inventor Douglas Fogg

Douglas Fogg 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).

  • Protection circuitry for cathode ray tubes
    Patent number: 3958152
    Abstract: Both velocity and x-y deflection magnitude of a cathode ray tube (CRT) electron beam are continuously sensed, and beam intensity is limited to prevent damage to the CRT during periods of insufficient beam deflection.
    Type: Grant
    Filed: August 23, 1973
    Date of Patent: May 18, 1976
    Assignee: Hewlett-Packard Company
    Inventors: Orvel Douglas Fogg, Eugene Kenneth Severson