Patents by Inventor Glen C. Griffin

Glen C. Griffin 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).

  • Note taking card
    Patent number: D290617
    Type: Grant
    Filed: February 11, 1983
    Date of Patent: June 30, 1987
    Assignee: The Glen and Mary Ella Griffin Trust
    Inventor: Glen C. Griffin