Patents by Inventor Derek W. Dutton

Derek W. Dutton 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).

  • Chair
    Patent number: D277712
    Type: Grant
    Filed: January 3, 1983
    Date of Patent: February 26, 1985
    Inventors: Derek W. Dutton, Katherine W. De Foyd