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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2230/00
Measuring physiological parameters of the user
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A63B2230/04
heartbeat characteristics, e.g. ECG, blood pressure modulations
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