Patents by Inventor Donald Drury

Donald Drury 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).

  • Propulsion unit for water craft
    Patent number: 4652244
    Abstract: A stream of water is caused to move through a duct carried within the hull of a water craft and is discharged as a jet in a direction which is non-directional to the craft. The jet is redirected, as by a plate or nozzle, to impart movement to the craft in a selected direction.
    Type: Grant
    Filed: April 8, 1985
    Date of Patent: March 24, 1987
    Inventor: Donald Drury