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发明名称
DOWNHOLE DATA TRANSMISSION
摘要
申请公布号
EP0767863(A1)
申请公布日期
1997.04.16
申请号
EP19950919543
申请日期
1995.05.23
申请人
EXPRO NORTH SEA LIMITED
发明人
EDWARDS, JEFFREY, CHARLES
分类号
E21B47/12;(IPC1-7):E21B47/12
主分类号
E21B47/12
代理机构
代理人
主权项
地址
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