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发明名称
Formation tester
摘要
申请公布号
US2262655(A)
申请公布日期
1941.11.11
申请号
US19400314662
申请日期
1940.01.19
申请人
SEALE ROY Q
发明人
SEALE ROY Q.
分类号
E21B49/10
主分类号
E21B49/10
代理机构
代理人
主权项
地址
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