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发明名称
Method of controlling well fluids
摘要
申请公布号
US2283206(A)
申请公布日期
1942.05.19
申请号
US19380199831
申请日期
1938.04.04
申请人
HAYWARD JOHN T
发明人
HAYWARD JOHN T.
分类号
E21B33/138;E21B47/10
主分类号
E21B33/138
代理机构
代理人
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