Patents by Inventor Harold J. Graber

Harold J. Graber 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).

  • Shank and coulter mounting clamp
    Patent number: 4194576
    Abstract: A shank and coulter mounting clamp for attaching to an angular shaped plow frame tube. The clamp securing a rolling coulter and rigid shank to the plow frame with the rolling coulter disposed in front of and adjacent the throat of the shank. The clamp providing for a uniform distribution of load forces transmitted from the shank and coulter to the plow frame.
    Type: Grant
    Filed: December 12, 1977
    Date of Patent: March 25, 1980
    Inventor: Harold J. Graber