Road and bridge construction management equipment

The utility model relates to road and bridge construction management equipment. The device comprises a device body, a recording plate is arranged at the lower part of the device body; a fixing block is arranged on the side face of the device body. A recording pen is arranged in the fixed block; a ti...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	WANG GAOFEI, ZHANG XIAN, FANG JUN, LEI YANLI, LYU XINGLI, GE XIAOJIANG, ZHANG HONGLI, GUO ZHENFENG, TU JIAN, JIAO LIQIANG, XI WENKAI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ALARM SYSTEMS ORDER TELEGRAPHS PHYSICS SIGNALLING SIGNALLING OR CALLING SYSTEMS
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