134729 ⎘
Doors, windows, or like closures for special purposes ; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes against air pressure, explosion, or gas Closures for relieving excess pressure inside the building
CLOSURE WITH VALVE DEVICE
#2Movable barrier with pressure equalization features
#3Containment device comprising a dry curtain
#4Press fit storm window system
#5Door system for airflow control
#6Door device with pressure difference mitigating mechanism
#7PRESS-FIT STORM WINDOW SYSTEM HAVING CONTROLLED BLOWOUT
#8Explosion-venting door structure
#9Frame/filling combination
#10Explosion-resisting window
#11Hollow core door with internal air flow