Patents by Inventor Dan E. Duval

Dan E. Duval 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).

  • Futon mattress
    Patent number: D426739
    Type: Grant
    Filed: March 12, 1999
    Date of Patent: June 20, 2000
    Assignee: Federal Foam Technologies, Inc.
    Inventors: Kelly P. Kidder, Dan E. Duval