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经营范围
发明名称
Drill rigs
摘要
申请公布号
US3196957(A)
申请公布日期
1965.07.27
申请号
US19620192186
申请日期
1962.05.03
申请人
ATLAS COPCO AKTIEBOLAG
发明人
OTTOSSON CARL OTTO LENNART;HALLBERG KARL MAGNUS
分类号
E21B7/02;E21B15/00
主分类号
E21B7/02
代理机构
代理人
主权项
地址
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