Patents by Inventor Dennis Clarkson

Dennis Clarkson 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: D489143
    Type: Grant
    Filed: April 11, 2003
    Date of Patent: April 27, 2004
    Assignee: Clarkson Enterprises
    Inventor: Dennis Clarkson
  • Patent number: D490547
    Type: Grant
    Filed: April 10, 2003
    Date of Patent: May 25, 2004
    Assignee: Clarkson Enterprises
    Inventor: Dennis Clarkson