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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A44B19/30
with means for locking in position
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A44B19/301
at the end of their upward travel with any suitable device, e.g. pull member combined with a press-button, a hook, a key-operated lock
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