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经营范围
发明名称
System für Bohrlochmessungen während des Bohrens.
摘要
申请公布号
DE69016005(D1)
申请公布日期
1995.02.23
申请号
DE19906016005
申请日期
1990.03.27
申请人
SCHLUMBERGER CANADA LTD., CALGARY, ALBERTA, CA
发明人
GOODSMAN, WILLIAM GORDON, CALGARY, ALBERTA T3E467, CA
分类号
E21B47/12;F16F9/20;F16K47/00;(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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