Patents by Inventor David W. F. Campbell

David W. F. Campbell 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).

  • Patent number: D348462
    Type: Grant
    Filed: May 11, 1992
    Date of Patent: July 5, 1994
    Assignee: Silcom Research Limited
    Inventor: David W. F. Campbell