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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A43B13/14
characterised by the constructive form
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A43B13/143
provided with wedged, concave or convex end portions, e.g. for improving roll-off of the foot
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A43B13/146
Concave end portions, e.g. with a cavity or cut-out portion
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