Apparatus for both venting smoke and blocking fire

Details Apparatus for both venting smoke and blocking fire Apparatus for both venting smoke and blocking fire

A - Human Necessities

62

C

137/4.5

A62C 2/24 (2006.01)

Patent

CA 1200461

ABSTRACT A normally closed vent opens in response to smoke and closes and is locked closed in response to the heat of a fire.

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