Patents by Inventor Jack S. Sellmeyer

Jack S. Sellmeyer 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).

  • Automatic modulation control apparatus
    Patent number: 4199723
    Abstract: The present invention concerns circuitry for comparing the output power of an amplitude modulated RF transmitter with the supply power to the RF transmitter and using feedback from a comparator to a variable gain modulation amplifier to maintain the level of modulation constant. The scheme is illustrated for four different basic types of RF amplitude modulated transmitters.
    Type: Grant
    Filed: February 24, 1978
    Date of Patent: April 22, 1980
    Assignee: Rockwell International Corporation
    Inventors: Forest M. Cummings, Jack S. Sellmeyer