EXCAVATING DEVICE

PURPOSE:To attach a leader mast to a boom or detach it from the boom on a job site. CONSTITUTION:The boom combining cylinder part B1 of a leader mast B can be pivotally attached with a boom A capably of being combined or separated, and the boom combining cylinder part B1 is separably suspended by me...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	OHORI MASATO
Format:	Patent
Sprache:	eng
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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