Patents by Inventor Marshall Clark

Marshall Clark 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).

  • Exerciser
    Patent number: D268436
    Type: Grant
    Filed: January 28, 1980
    Date of Patent: March 29, 1983
    Inventor: Marshall Clark