Patents by Inventor Dennis M. Hartwig

Dennis M. Hartwig 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).

  • Roadster windshield frame
    Patent number: D472859
    Type: Grant
    Filed: July 31, 2002
    Date of Patent: April 8, 2003
    Inventors: Zane Cullen, Dennis M. Hartwig