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发明名称
Forings-tilknytningshylse
摘要
申请公布号
NO950261(D0)
申请公布日期
1995.01.24
申请号
NO19950000261
申请日期
1995.01.24
申请人
BAKER HUGHES INC
发明人
KENNEDY, BRIAN S.
分类号
E21B23/03;E21B23/12;E21B43/10;E21B47/024;(IPC1-7):E21B
主分类号
E21B23/03
代理机构
代理人
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