Patents by Inventor Michael Coffel

Michael Coffel 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).

  • Game board
    Patent number: D292422
    Type: Grant
    Filed: March 13, 1985
    Date of Patent: October 20, 1987
    Inventor: Michael Coffel