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发明名称
Downhole apparatus including a valve
摘要
申请公布号
GB2336613(B)
申请公布日期
2002.03.27
申请号
GB19990013434
申请日期
1998.10.09
申请人
* OCRE
发明人
CLIVE JOHN * FRENCH
分类号
E21B34/06;E21B34/10;(IPC1-7):E21B34/10
主分类号
E21B34/06
代理机构
代理人
主权项
地址
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