Patents by Inventor John Polc

John Polc 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).

  • Blade for a mortar hoe
    Patent number: D246498
    Type: Grant
    Filed: January 23, 1976
    Date of Patent: November 29, 1977
    Inventor: John Polc
  • Blade for a mortar hoe
    Patent number: D254287
    Type: Grant
    Filed: December 26, 1978
    Date of Patent: February 26, 1980
    Inventor: John Polc