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发明名称
Well drilling control system
摘要
申请公布号
US2080804(A)
申请公布日期
1937.05.18
申请号
US19350019017
申请日期
1935.04.30
申请人
BRANTLY JOHN E
发明人
BRANTLY JOHN E.
分类号
E21B19/08
主分类号
E21B19/08
代理机构
代理人
主权项
地址
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