Patents by Inventor Gregory S Hoffman

Gregory S Hoffman 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).

  • Snowmobile ski brake
    Patent number: 5931481
    Abstract: A snowmobile braking system providing blades which are downwardly extendible from each side in the central portion of a steering ski controlled by the user by means of an electrically powered pump activating a hydraulic ram which, when desired, rotates the blades downward from the plane of the ski.
    Type: Grant
    Filed: April 23, 1997
    Date of Patent: August 3, 1999
    Inventor: Gregory S Hoffman