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发明名称
Well tool orientation system with remote indicator
摘要
申请公布号
GB2048991(A)
申请公布日期
1980.12.17
申请号
GB19800015002
申请日期
1980.05.06
申请人
ARMCO INC
发明人
分类号
E21B33/047;(IPC1-7):E21B23/00
主分类号
E21B33/047
代理机构
代理人
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