Patent classifications
A
HUMAN NECESSITIES
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A62
LIFE-SAVING; FIRE-FIGHTING
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A62C
FIRE-FIGHTING
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3/00
Fire prevention, containment or extinguishing specially adapted for particular objects or places
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A62C3/02
for area conflagrations, e.g. forest fires, subterranean fires
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A62C3/0257
Fire curtains, blankets, walls, fences
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