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Stacking puzzle
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Patent number 5,558,331
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Issue date Sep 24, 1996
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Dmitry Zlotsky
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A63 - SPORTS GAMES AMUSEMENTS
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Game and puzzle board
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Patent number 5,403,005
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Issue date Apr 4, 1995
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Jesus Avila-Valdez
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A63 - SPORTS GAMES AMUSEMENTS
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Stacking piece puzzle
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Patent number 5,145,177
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Issue date Sep 8, 1992
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Loren B. Wells
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A63 - SPORTS GAMES AMUSEMENTS
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Strategy game
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Patent number 4,226,419
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Issue date Oct 7, 1980
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Neal R. Wooden
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A63 - SPORTS GAMES AMUSEMENTS
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Puzzle
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Patent number 4,040,630
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Issue date Aug 9, 1977
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William G. Brattain
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A63 - SPORTS GAMES AMUSEMENTS
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3829100
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Patent number 3,829,100
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Issue date Aug 13, 1974
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A63 - SPORTS GAMES AMUSEMENTS
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3815918
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Patent number 3,815,918
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Issue date Jun 11, 1974
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A63 - SPORTS GAMES AMUSEMENTS
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3630525
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Patent number 3,630,525
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Issue date Dec 28, 1971
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A63 - SPORTS GAMES AMUSEMENTS
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3550943
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Patent number 3,550,943
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Issue date Dec 29, 1970
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A63 - SPORTS GAMES AMUSEMENTS
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3302311
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Patent number 3,302,311
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Issue date Feb 7, 1967
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A63 - SPORTS GAMES AMUSEMENTS
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2905474
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Patent number 2,905,474
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Issue date Sep 22, 1959
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A63 - SPORTS GAMES AMUSEMENTS
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1709660
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Patent number 1,709,660
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Issue date Apr 16, 1929
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A63 - SPORTS GAMES AMUSEMENTS