Patents by Inventor Norbert D. Lang

Norbert D. Lang 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).

  • Retractable cover for open top container
    Patent number: 4129331
    Abstract: A flexible cover for an open top trailer is so mounted as to be moved by pneumatic power means between a closed position and an open position in which the cover is retracted toward a position adjacent one side of the trailer so as to be generally pleated by a system of rubber ropes.
    Type: Grant
    Filed: August 17, 1977
    Date of Patent: December 12, 1978
    Inventors: Herman L. Lawson, Norbert D. Lang