Patents by Inventor David M. Wilcox

David M. Wilcox 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).

  • Electron beam tube arrangements having primary and secondary output cavities
    Patent number: 5239272
    Abstract: An electron beam tube arrangement has an output cavity resonator circuit which includes a first output cavity, a second output cavity being coupled thereto by means of a coupling loop. The coupling loop is located in the first cavity and connected to said second cavity. In one embodiment of the invention, the second cavity also contains a coupling loop which is electrically connected to that in the first output cavity.
    Type: Grant
    Filed: March 6, 1991
    Date of Patent: August 24, 1993
    Assignee: EEV Limited
    Inventors: Heinz P. Bohlen, David M. Wilcox, Roy Heppinstall, Mark Bridges, Steven Bardell