Patents by Inventor Stephen G. Bernhard

Stephen G. Bernhard 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).

  • Grinding machine and method of sharpening grass mower bedknives
    Patent number: 5725415
    Abstract: A portable grinding machine for grinding the bottom blade or bedknife of grass mowers. The grinding machine includes a rotary grinding wheel assembly arranged for linear motion, where the wheel assembly can adjust along the blade or bedknife and grind them.
    Type: Grant
    Filed: January 11, 1996
    Date of Patent: March 10, 1998
    Inventor: Stephen G. Bernhard
  • Machine guard
    Patent number: D320607
    Type: Grant
    Filed: July 29, 1988
    Date of Patent: October 8, 1991
    Assignee: Atterton & Ellis Limited
    Inventors: David A. Smith, Stephen G. Bernhard