Patents by Inventor Michael P. Sanford

Michael P. Sanford 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).

  • Jacketed marine propeller
    Patent number: 5213525
    Abstract: A turbine type, jacketed propeller which has a venturi jacket formed around and with the propeller. The propeller blades are shaped in conjunction with the jacket so as to load the blades with more water and keep the water on the blades to help maintain pressure for propulsion.
    Type: Grant
    Filed: June 6, 1991
    Date of Patent: May 25, 1993
    Inventor: Michael P. Sanford