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Patent classifications
A
HUMAN NECESSITIES
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A44
HABERDASHERY; JEWELLERY
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A44B
BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
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9/00
Hat, scarf, or safety pins or the like
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A44B9/12
Safety-pins
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A44B9/18
Hinges; Locking devices
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