Patents by Inventor Denis Wardlow

Denis Wardlow 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).

  • Cross country ski
    Patent number: 4919447
    Abstract: A cross country ski having a bottom running surface with a plurality of grooves formed thereon. Each groove has a central portion extending transversely to the length of the ski and two lateral portions slanting rearwardly and outwardly from the forward portion. Each groove has a surface slanting toward a flat portion coincident with the running surface, in a manner that at any transverse location on the bottom of the ski a portion of the bottom surface is in contact with the surface of the snow.
    Type: Grant
    Filed: March 18, 1988
    Date of Patent: April 24, 1990
    Assignee: Allsop, Inc.
    Inventors: James E. Jackson, Denis Wardlow