Patents by Inventor Denver E Yates

Denver E Yates 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).

  • Self-propelled hand truck
    Patent number: D420481
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: February 8, 2000
    Inventor: Denver E Yates