Safety indicating device for open pit coal mine

A safety indicating device for an open pit coal mine comprises a center supporting base and an auxiliary supporting base on the periphery of the center supporting base, supporting plates are arranged on the center supporting base and the auxiliary supporting base, and a multi-angle display area is c...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	ZHAO RUICHENG, SESHAN AILI AZAMATI, QIAN PU, CHEN XUEDONG, CHO BOK HYUN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ADVERTISING CRYPTOGRAPHY DISPLAY DISPLAYING EDUCATION LABELS OR NAME-PLATES PHYSICS SEALS SIGNS
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