Patents by Inventor Mark E. Graham

Mark E. Graham 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).

  • Patent number: D312234
    Type: Grant
    Filed: March 21, 1988
    Date of Patent: November 20, 1990
    Inventors: William A. Rasor, Mark E. Graham
  • Patent number: D313216
    Type: Grant
    Filed: March 21, 1988
    Date of Patent: December 25, 1990
    Assignee: Huron/St. Clair Company
    Inventors: William A. Rasor, Mark E. Graham