Patents by Inventor Jerome E. Retzer

Jerome E. Retzer 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).

  • Patent number: 4884808
    Abstract: A golf club is shown with a head having a selection of exchangeable face plates adapted to be secured thereon. The club head includes a face portion, a toe portion, a heel portion. a sole or bottom portion, and a hosel receiving a shaft. The face portion has a recess exending inwardly a short distance from the outer surface of the face to receive the exchangeable face plates. A bore extends inwardly a distance from the recessed surface and a pair of smaller bores are spaced laterally to each side of the larger bore. Each face plate has a flat rear surface corresponding to the recess in the club head. The face plates are provided in varied swing weights and hardnesses and the ball striking surfaces have different characteristics for loft, bulge, and or roll. A plurality of face plates are provided with striking surfaces corresponding to conventional clubs #1 through #14.
    Type: Grant
    Filed: March 24, 1988
    Date of Patent: December 5, 1989
    Inventor: Jerome E. Retzer