Patents by Inventor Gary Helliwell

Gary Helliwell 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: D436759
    Type: Grant
    Filed: December 22, 1998
    Date of Patent: January 30, 2001
    Inventor: Gary Helliwell