Patents by Inventor Tom Sprague

Tom Sprague 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).

  • Golf club with supplement portion
    Patent number: 5275413
    Abstract: A putter having a head supplement portion detachably mounted on the back of the head in the putter. Mortise and tenon structure interconnects the supplement portion and putter head. Screw fasteners engage anchor projections in the mortise and tenon structure to hold the supplement portion in place.
    Type: Grant
    Filed: December 17, 1992
    Date of Patent: January 4, 1994
    Inventor: Tom Sprague