Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B66
HOISTING; LIFTING; HAULING
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B66B
ELEVATORS; ESCALATORS OR MOVING WALKWAYS
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29/00
Safety devices of escalators or moving walkways
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B66B29/02
responsive to, or preventing, jamming by foreign objects
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B66B29/04
for balustrades or handrails
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