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Publication of BE709134ApublicationCriticalpatent/BE709134A/xx
E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
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
E06B5/10—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
E06B5/16—Fireproof doors or similar closures; Adaptations of fixed constructions therefor