Patents by Inventor Donald W. Cantin

Donald W. Cantin 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).

  • Multi-use watercraft
    Patent number: 4587917
    Abstract: A watercraft having a buoyant hull provided with a centrally disposed, narrow keel and pontoons spaced at either side of the keel is surmounted by a circular deck portion on which various fittings can be disposed to allow for conversion of the hull to the specific form of a plurality of types of watercraft.
    Type: Grant
    Filed: June 11, 1984
    Date of Patent: May 13, 1986
    Inventor: Donald W. Cantin