Patents by Inventor Jeff D. Hanson

Jeff D. Hanson 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).

  • Three-dimensional game board
    Patent number: D291899
    Type: Grant
    Filed: December 18, 1984
    Date of Patent: September 15, 1987
    Assignee: JMBL Corporation
    Inventors: Douglas M. Hanson, Jeff D. Hanson, Brian E. Hanson