Patents by Inventor Duane J. Walhof

Duane J. Walhof 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).

  • Wall-mounted foldable work bench
    Patent number: D295007
    Type: Grant
    Filed: July 22, 1985
    Date of Patent: April 5, 1988
    Assignee: Sioux Steel Company
    Inventors: Robert E. Hardy, Duane J. Walhof, Terry A. Adams, David A. Kocak, Donald J. Siglin, Richard R. Klock, William H. Hockenberry, Jr., William W. Cooper, Rick G. Klinkhammer, Keith M. Polzin, Richard W. Wickstrom, Delmar E. Ostrem, Monte L. Peters