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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2209/00
Characteristics of used materials
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A63B2209/02
with reinforcing fibres, e.g. carbon, polyamide fibres
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A63B2209/026
Ratio fibres-total material
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