Deviating device of a locking bar brace for a window or a door
Device capable of opening/closing a door at either side thereof
Device for the sutter-like and tilt-down opening of a window or
Door
Door opening and closing apparatus
Door opening and closing mechanism with dual pivot axis for...
Double swing door opening/closing mechanism
Double swing door opening/closing mechanism
Double-hung closure for access openings
Double-hung closure for access openings
Double-opening device of automobile doors
Dual axle linkage mechanism for door and casement window
Dual-opening mechanism of door