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发明名称
Method of and apparatus for locating formations in cased wells
摘要
申请公布号
US2414194(A)
申请公布日期
1947.01.14
申请号
US19370134049
申请日期
1937.03.31
申请人
ROBERT V. FUNK
发明人
ENNIS GEORGE H.
分类号
G01V3/22
主分类号
G01V3/22
代理机构
代理人
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地址
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