Patents by Inventor Hiram D. Clark

Hiram D. Clark 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).

  • Grass extracting device
    Patent number: D264424
    Type: Grant
    Filed: July 26, 1979
    Date of Patent: May 18, 1982
    Inventor: Hiram D. Clark
  • Weed puller
    Patent number: D274403
    Type: Grant
    Filed: April 22, 1982
    Date of Patent: June 26, 1984
    Inventor: Hiram D. Clark, III