Patent classifications
A
HUMAN NECESSITIES
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A63
SPORTS; GAMES; AMUSEMENTS
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A63D
BOWLING GAMES, e.g. SKITTLES, BOCCE OR BOWLS; INSTALLATIONS THEREFOR; BAGATELLE OR SIMILAR GAMES; BILLIARDS
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3/00
Table bowling games; Miniature bowling-alleys; Bowling games
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A63D3/02
Arrangement of devices for propelling or projecting the balls; , e.g. spring, string, sling drive, roll-off devices
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