Patents by Inventor Earnest L. Williamson

Earnest L. Williamson 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: D436479
    Type: Grant
    Filed: May 8, 2000
    Date of Patent: January 23, 2001
    Inventor: Earnest L. Williamson
  • Patent number: D452103
    Type: Grant
    Filed: December 4, 2000
    Date of Patent: December 18, 2001
    Inventor: Earnest L. Williamson