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发明名称
Well tester
摘要
申请公布号
US2338369(A)
申请公布日期
1944.01.04
申请号
US19370174071
申请日期
1937.11.11
申请人
WILLIAMS OLLIN W;BROWN LUTHER E
发明人
WILLIAMS OLLIN W.;BROWN LUTHER E.
分类号
E21B33/127;E21B49/08
主分类号
E21B33/127
代理机构
代理人
主权项
地址
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