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发明名称
Rörforbindelse for rördeler i en borestreng
摘要
申请公布号
NO179051(B)
申请公布日期
1996.04.15
申请号
NO19900004761
申请日期
1990.11.01
申请人
BAKER HUGHES INC
发明人
WITTE, JOHANNES
分类号
E21B7/06;E21B17/042;F16L15/08;(IPC1-7):E21B17/042;F16L15/02
主分类号
E21B7/06
代理机构
代理人
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地址
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