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发明名称
BOREHOLE DRILLING RIG AND METHOD
摘要
申请公布号
AU3623084(A)
申请公布日期
1986.06.12
申请号
AU19840036230
申请日期
1984.12.03
申请人
VON ELLING, E.H.W.
发明人
ERWIN HEINRICH WOLF VON ELLING
分类号
E21B7/02
主分类号
E21B7/02
代理机构
代理人
主权项
地址
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