Patent classifications
A
HUMAN NECESSITIES
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A63
SPORTS; GAMES; AMUSEMENTS
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A63F
CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
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9/00
Games not otherwise provided for
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A63F9/06
Patience; Other games for self-amusement
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A63F9/08
Puzzles provided with elements movable in relation,; i.e. movably connected; , to each other
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A63F9/0803
Two-dimensional puzzles with slideable or rotatable elements or groups of elements, the main configuration remaining unchanged
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A63F9/0807
requiring vacant positions or gap migration, e.g. two-dimensional sliding puzzles
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