Patents by Inventor John W. Gammon

John W. Gammon 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).

  • Single feed point matching systems
    Patent number: 5856808
    Abstract: Single feed point matching systems for radiotelephones include a retractable antenna and a stationary ferrule contact which are configured to define a coaxial capacitor therebetween when the antenna is in the extended position.
    Type: Grant
    Filed: September 29, 1997
    Date of Patent: January 5, 1999
    Assignee: Ericsson Inc.
    Inventors: Howard E. Holshouser, Robert A. Sadler, Gerard Hayes, John W. Gammon