Patents by Inventor Marshall Freeman

Marshall Freeman 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).

  • Tire traction enhancing apparatus
    Patent number: 4274463
    Abstract: A traction enhancing apparatus for attachment to vehicular tires having both circumferential and cross chain members engaging the tread of the tire and further including one or two semi-rigid "U-shaped" bridle members for gripping the tire sidewalls during installation while rotating away from the gripping position so as to be a part of the closure structure after installation of the apparatus on the tire.
    Type: Grant
    Filed: October 25, 1979
    Date of Patent: June 23, 1981
    Inventor: Marshall Freeman