E06B
FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
E06B
FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
E06B5/00
Doors, windows, or like closures for special purposes; Border constructions therefor
E06B5/00
Doors, windows, or like closures for special purposes; Border constructions therefor
E06B5/10
for protection against air-raid or other war-like action; for other protective purposes
E06B5/10
for protection against air-raid or other war-like action; for other protective purposes