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发明名称
Mehrzweck-Bohrlochgeraet
摘要
申请公布号
DE1184299(B)
申请公布日期
1964.12.31
申请号
DE1963SC33421
申请日期
1963.06.18
申请人
SCHLUMBERGER WELL SURVEYING CORPORATION
发明人
NUTTER BENJAMIN PHARR
分类号
E21B23/00
主分类号
E21B23/00
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代理人
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