Patents by Inventor John E. Sadowski

John E. Sadowski 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).

  • Golfer's aid
    Patent number: D293261
    Type: Grant
    Filed: November 19, 1984
    Date of Patent: December 15, 1987
    Inventor: John E. Sadowski
  • Golf tee
    Patent number: D306194
    Type: Grant
    Filed: March 12, 1987
    Date of Patent: February 20, 1990
    Inventor: John E. Sadowski