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经营范围
发明名称
A DRILL BOOM ARRANGEMENT
摘要
申请公布号
EP0004837(A3)
申请公布日期
1979.10.31
申请号
EP19790850025
申请日期
1979.04.11
申请人
ATLAS COPCO AKTIEBOLAG
发明人
KIMBER, ERICH VOLDEMAR;HOKBY, NILS
分类号
E21B15/04;(IPC1-7):E21C11/00
主分类号
E21B15/04
代理机构
代理人
主权项
地址
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