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发明名称
Fremgangsm}te for detektere utvaskinger p} en borestreng
摘要
申请公布号
NO931863(A)
申请公布日期
1993.11.24
申请号
NO19930001863
申请日期
1993.05.21
申请人
SEDCO FOREX TECHNOLOGY INC
发明人
DAMAK, MOHAMED;MCCANN, DOMINIC PATRICK JOSEPH;WHITE, DAVID BRIAN
分类号
E21B21/08;E21B44/00;(IPC1-7):E21B47/00
主分类号
E21B21/08
代理机构
代理人
主权项
地址
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