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发明名称
Styreanordning for boring av et borehull
摘要
申请公布号
NO962744(D0)
申请公布日期
1996.06.28
申请号
NO19960002744
申请日期
1996.06.28
申请人
LIW, LARS
发明人
LIW, LARS
分类号
E21B4/18;E21B7/06;E21B17/10;(IPC1-7):E21B
主分类号
E21B4/18
代理机构
代理人
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地址
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