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发明名称
Trykkpulsgenerator for systemer som mÕler-samtidig med-boring hvilken produserer h°y signalstyrke og fremviser h°y motstand mot fastkiling
摘要
申请公布号
NO985345(D0)
申请公布日期
1998.11.17
申请号
NO19980005345
申请日期
1998.11.17
申请人
ANADRILL INTERNATIONAL SA
发明人
MORIARTY, KEITH A.
分类号
E21B47/18;(IPC1-7):E21B
主分类号
E21B47/18
代理机构
代理人
主权项
地址
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