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发明名称
DIVERTED CONDUCTOR DRIVING SYSTEMS FOR THE DRILLING OF WELLS
摘要
申请公布号
MY8100083(A)
申请公布日期
1981.12.31
申请号
MY19810000083
申请日期
1981.12.30
申请人
GURTLER HEBERT & CO INC
发明人
分类号
E21B7/04;E21B7/136;E21B15/04;(IPC1-7):E21B7/06
主分类号
E21B7/04
代理机构
代理人
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