Patents by Inventor John Bierens

John Bierens 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).

  • Automotive vehicle suspension
    Patent number: 4506910
    Abstract: An automotive vehicle suspension comprising a beam, and an air spring between the vehicle frames and the beam. The air spring comprises an air spring lobe connected to the vehicle frame and a reinforced piston mounted on the beam in laterally offset relation to the longitudinal centerline of the beam.
    Type: Grant
    Filed: September 21, 1982
    Date of Patent: March 26, 1985
    Assignee: Granning Suspensions, Inc.
    Inventor: John Bierens