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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A63B53/02
Joint structures between the head and the shaft
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A63B53/022
allowing adjustable positioning of the head with respect to the shaft
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A63B53/023
adjustable angular orientation
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A63B53/025
lie angle only, i.e. relative angular adjustment between the shaft and the club head about an axis parallel to the intended line of play when the club is in its normal address position
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