Patents by Inventor William Clayton Summerhill

William Clayton Summerhill 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: D491846
    Type: Grant
    Filed: July 29, 2003
    Date of Patent: June 22, 2004
    Inventor: William Clayton Summerhill