Patent classifications
A
HUMAN NECESSITIES
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A63
SPORTS; GAMES; AMUSEMENTS
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A63B
APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
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A63B31/08
Swim fins, flippers or other swimming aids held by, or attachable to, the hands, arms, feet or legs
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A63B31/10
held by, or attachable to, the hands or feet
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