Patents by Inventor Richard P. Wakenigg

Richard P. Wakenigg 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).

  • Set of interlocking sharpening stones
    Patent number: D408254
    Type: Grant
    Filed: January 23, 1997
    Date of Patent: April 20, 1999
    Assignee: Edgecraft Corporation
    Inventors: Daniel D. Friel, Jr., Richard P. Wakenigg