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发明名称
Well tester
摘要
申请公布号
US1833362(A)
申请公布日期
1931.11.24
申请号
US19290410369
申请日期
1929.11.29
申请人
J. A. LOGAN
发明人
HUMASON GRANVILLE A.
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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