Patents by Inventor Michael T. Duffee

Michael T. Duffee 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).

  • Game transportation device
    Patent number: 4335891
    Abstract: A game transportation device comprises a thin, flexible sheet, plastic sled upon which an animal can be secured by straps, and a harness attached to the sled for pulling the same along the ground. Downwardly movable ground engaging flaps are provided to prevent backward movement of the sled on an incline.
    Type: Grant
    Filed: March 28, 1980
    Date of Patent: June 22, 1982
    Inventors: Francis P. Alley, Michael T. Duffee