Patents by Inventor George F. Bell

George F. Bell 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 device for small boats
    Patent number: 4810217
    Abstract: A propulsion device for small craft having a shaft, a flexible bag on the shaft at one end, the bag having a larger end which is open and a smaller end with a water flow opening, a cross member extending transversely of the shaft and across the larger bag end, and a spreader device to spread the bag.
    Type: Grant
    Filed: March 14, 1988
    Date of Patent: March 7, 1989
    Inventor: George F. Bell