Patents by Inventor Wolfgang Plankenhorn

Wolfgang Plankenhorn 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).

  • Device for sharpening blades
    Patent number: 6119554
    Abstract: A device for sharpening blades has a hard metal cutting blade (7) per se known in the art, secured to an ergonomically shaped handle (1). A bead (6) is provided to reduce the risk of accidents.
    Type: Grant
    Filed: May 17, 1999
    Date of Patent: September 19, 2000
    Inventor: Wolfgang Plankenhorn