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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21/00
Heels; Top-pieces or top-lifts
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A43B21/36
characterised by their attachment; Securing devices for the attaching means
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A43B21/52
Interchangeable heel parts without special attachments
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