A alarm frightens and hinders device for building site

The utility model provides an alarm frightens and hinders device for building site, frightens including reporting to the police to hinder the device and connect the warning and frightens the inductionsystem who hinders the device, the warning frightens and hinders the device and include the mount pa...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	SONG MINGJING, LIU YI, LIU HAOCHUN, CAO FENGXUAN, JU BO, WANG QIAN, LIU GUIFENG, LIU YANG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ALARM SYSTEMS ORDER TELEGRAPHS PHYSICS SIGNALLING SIGNALLING OR CALLING SYSTEMS
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