SAFETY WINDOW FOR CONFIRMING VISITOR AND DOOR HAVING THE SAFETY WINDOW

Bibliographische Detailangaben

1. Verfasser:	HAN, KYOUNG-IL
Format:	Patent
Sprache:	eng
Schlagworte:	DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL FIXED CONSTRUCTIONS FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES,FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS,BLINDS, GATES LADDERS
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