Patents by Inventor Edwin J. Diefes

Edwin J. Diefes 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).

  • Saxophone thumb rest
    Patent number: D339601
    Type: Grant
    Filed: August 26, 1991
    Date of Patent: September 21, 1993
    Inventor: Edwin J. Diefes