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发明名称
Measurement of sound velocities in strata traversed by boreholes
摘要
申请公布号
US2238991(A)
申请公布日期
1941.04.22
申请号
US19380228107
申请日期
1938.09.02
申请人
STANOLIND OIL AND GAS COMPANY
发明人
CLOUD RAYMOND T.
分类号
G01V1/50
主分类号
G01V1/50
代理机构
代理人
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