Opening and closing device and opening and closing system

The embodiment of the utility model discloses an opening and closing device, and relates to the technical field of opening and closing structures. The opening and closing device comprises a shell provided with an accommodating space. And the shell is provided with an opening part for communicating t...

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Bibliographische Detailangaben
1. Verfasser:	GAO LIYE
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING CHECKS FOR WINGS DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS ORMACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS,CLIPS, WEDGES, JOINTS OR JOINTING DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION ENGINEERING ELEMENTS AND UNITS FIXED CONSTRUCTIONS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING KEYS LIGHTING LOCKS LUBRICATING MECHANICAL ENGINEERING SAFES THERMAL INSULATION IN GENERAL WEAPONS WINDOW OR DOOR FITTINGS WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THEFUNCTIONING OF THE WING
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