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发明名称
UNTERTRÄGIGE SIGNALÜBERTRAGUNGSVORRICHTUNG
摘要
申请公布号
DE69614536(T2)
申请公布日期
2002.04.18
申请号
DE19966014536T
申请日期
1996.06.11
申请人
WEATHERFORD/LAMB INC., WILMINGTON
发明人
HOLBERT, L.;HASLETT, W.;SMALLWOOD, E.;TROFIMENKOFF, N.
分类号
E21B47/01;E21B17/00;E21B47/12;F16L25/02;(IPC1-7):E21B17/00
主分类号
E21B47/01
代理机构
代理人
主权项
地址
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