Patents by Inventor Charles C. Mathews

Charles C. Mathews 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).

  • United States educational cards
    Publication number: 20030137108
    Abstract: The present invention entails an educational entertainment deck of cards comprising of fifty cards with each card containing the outline of a state and a two-letter abbreviation of the state. The United Stated Educational Cards are for playing educational games, and learning important information about the states of the U.S.
    Type: Application
    Filed: January 22, 2002
    Publication date: July 24, 2003
    Inventor: Charles C. Mathews