Patents by Inventor Alfred McPhaul

Alfred McPhaul 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 multi-tiered chess board
    Patent number: 5358252
    Abstract: A square multi-tiered game board primarily for use in the games of chess and checkers which includes a plurality of upward facing, parallel, horizontal tiers, each said tier enclosing a center space therebetween. The tiers are arranged in internally descending order starting at the upper and outermost tier of the game board and descending stepwise to an innermost and lowest tier.
    Type: Grant
    Filed: November 23, 1993
    Date of Patent: October 25, 1994
    Inventor: Alfred McPhaul