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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21/00
Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
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A63B21/06
User-manipulated weights
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A63B21/072
Dumb-bells, bar-bells or the like; , e.g. weight discs having an integral peripheral handle
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A63B21/0726
Dumb bells, i.e. with a central bar to be held by a single hand, and with weights at the ends
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