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U.S. Pat. No. 2,454,693

U.S. Pat. No. 2,454,693

thingiverse

A cutting-edge 1948 portable chessboard technology is depicted by a 3D model of U.S. Patent No. 2,454,693. This invention, originating from the original Thingiverse - U.S. PTO, focuses on improvements in or relating to board games featuring moveable pieces with predetermined positions on the game board.

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