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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13/00
Soles; Sole-and-heel integral units
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A43B13/28
characterised by their attachment, also attachment of combined soles and heels
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A43B13/36
Easily-exchangeable soles
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