Patents by Inventor Donald R. Van Grinsven

Donald R. Van Grinsven 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).

  • Patent number: 4269164
    Abstract: A ground supported adjustable grill device comprising a single support leg element formed of a plurality of tubular members, the upper member being an inverted L-shape. Suspended from the upper L-shaped member is a grill or cooking utensil removably attached at one end of a flexible element, which in turn attaches to the single support leg member for stability, selective adjustment, and further being horizontally pivotal by means of a support leg member.
    Type: Grant
    Filed: March 5, 1979
    Date of Patent: May 26, 1981
    Inventors: Donald R. Van Grinsven, Michael H. Winius