Patents by Inventor Christopher D. Graham-Ward

Christopher D. Graham-Ward 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).

  • Patent number: 6378866
    Abstract: A summation of numbers board puzzle for an entertaining and enjoyable challenge. The summation of numbers board puzzle includes multiple game boards each of which has a plurality of holes respectively arranged in a triangular pattern therein with each vertex of the triangular pattern having its own hole, and includes two sets of twelve pegs each with each peg in each set having an exclusive number imprinted thereon, and also includes three tip cards for providing assistance in solving the summation puzzle, and further includes an answer sheet disposed in a sealable member for use only when absolutely needed, and in addition includes a container having a removable cover and having partitioned compartments therein for storing the game boards, the two sets of pegs, the tip cards, and the answer sheet. The user arranges the pegs in the holes in the game board member such that the sum of numbers along a side of the triangular pattern equals the sum of numbers along each of the remaining sides.
    Type: Grant
    Filed: February 25, 2000
    Date of Patent: April 30, 2002
    Inventor: Christopher D. Graham-Ward