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Patent classifications
A
HUMAN NECESSITIES
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A44
HABERDASHERY; JEWELLERY
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A44C
PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
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9/00
Finger-rings
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A44C9/0007
made of several rings
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A44C9/0015
connected or interlinked to each other
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A44C9/0023
in a separable way
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