Patent classifications
A
HUMAN NECESSITIES
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A43
FOOTWEAR
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A43B
CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
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3/00
Footwear characterised by the shape or the use
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A43B3/0036
characterised by a special shape or design
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A43B3/0094
with means to differentiate between right and left shoe
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