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发明名称
Well testing device
摘要
申请公布号
US2702474(A)
申请公布日期
1955.02.22
申请号
US19480048721
申请日期
1948.09.10
申请人
MADGE JOHNSTON;E. C. JOHNSTON, JR.;GORDON C. JOHNSTON;J. GLENN JOHNSTON;MORDICA O. JOHNSTON;MORDICA O. JOHNSTON, JR.;WARREN C. JOHNSTON
发明人
JOHNSTON JAMES L.
分类号
E21B49/08
主分类号
E21B49/08
代理机构
代理人
主权项
地址
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