Patents by Inventor David Yeaworth

David Yeaworth 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: D400933
    Type: Grant
    Filed: August 21, 1997
    Date of Patent: November 10, 1998
    Inventor: David Yeaworth
  • Patent number: D409250
    Type: Grant
    Filed: August 19, 1998
    Date of Patent: May 4, 1999
    Inventor: David Yeaworth
  • Patent number: D423598
    Type: Grant
    Filed: May 3, 1999
    Date of Patent: April 25, 2000
    Inventor: David Yeaworth
  • Patent number: D434810
    Type: Grant
    Filed: November 15, 1999
    Date of Patent: December 5, 2000
    Inventor: David Yeaworth