Ventilation method and device

Ventilation – Fire damper

Reexamination Certificate

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Details

C165S096000, C165S041000, C454S069000

Reexamination Certificate

active

06855050

ABSTRACT:
A damper system for air handling systems the manipulation or control of air in an enclosure such as a building, a room of a structure such as a residence, and the like.

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