Patents by Inventor Frank E. Williamson

Frank E. Williamson 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).

  • Ice holder
    Patent number: D312560
    Type: Grant
    Filed: May 18, 1988
    Date of Patent: December 4, 1990
    Inventor: Frank E. Williamson