Patents by Inventor William F. Spanner

William F. Spanner 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).

  • Boat anchor
    Patent number: D280193
    Type: Grant
    Filed: May 27, 1983
    Date of Patent: August 20, 1985
    Inventor: William F. Spanner
  • Anchor
    Patent number: D314364
    Type: Grant
    Filed: August 21, 1989
    Date of Patent: February 5, 1991
    Inventor: William F. Spanner