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发明名称
Method and apparatus for taking physical measurements in boreholes
摘要
申请公布号
US2421423(A)
申请公布日期
1947.06.03
申请号
US19430475944
申请日期
1943.02.15
申请人
GEOPHYSICAL DEVELOPMENT CORPORATION
发明人
KRASNOW SHELLEY
分类号
E21B47/06;G01V9/00
主分类号
E21B47/06
代理机构
代理人
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