Patent classifications
A
HUMAN NECESSITIES
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A62
LIFE-SAVING; FIRE-FIGHTING
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A62B
DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
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1/00
Devices for lowering persons from buildings or the like
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A62B1/06
by making use of rope-lowering devices
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A62B1/08
with brake mechanisms for the winches or pulleys
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A62B1/10
mechanically operated
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