Patents by Inventor Robert F. Hack

Robert F. Hack 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).

  • Decorative golf ball with magnet insert
    Patent number: 5478612
    Abstract: A decorative device comprises a golf ball including a recess; a plug with an exposed flat surface disposed within the recess such that the golf ball can be placed on flat surface without rolling off.
    Type: Grant
    Filed: July 15, 1994
    Date of Patent: December 26, 1995
    Inventors: Robert F. Hack, Robert K. Hack