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发明名称
Verfahren und Vorrichtung zur Unterdrückung von mikrophonischem Geräusch in Proportional-Zählrohren beim Bohrlochmessen während des Bohrens
摘要
申请公布号
DE69725630(D1)
申请公布日期
2003.11.27
申请号
DE1997625630
申请日期
1997.01.20
申请人
ANADRILL INTERNATIONAL S.A., PANAMA
发明人
SLOAN, W. ROBERT;KURKOSKI, PHILIP L.;HOLENKA, JACQUES M.
分类号
E21B47/01;G01T3/00;G01V5/04;(IPC1-7):G01V11/00;G01T1/17
主分类号
E21B47/01
代理机构
代理人
主权项
地址
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