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发明名称
DIRECTIONAL DRILLING APPARATUS
摘要
申请公布号
US3595326(A)
申请公布日期
1971.07.27
申请号
USD3595326
申请日期
1970.02.03
申请人
SCHLUMBERGER TECHNOLOGY CORP.
发明人
JACKSON R. CLAYCOMB
分类号
E21B7/06;E21B7/08;(IPC1-7):E21B7/08
主分类号
E21B7/06
代理机构
代理人
主权项
地址
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