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发明名称
A fluid flow switching device
摘要
申请公布号
GB2387612(A)
申请公布日期
2003.10.22
申请号
GB20020008764
申请日期
2002.04.17
申请人
* RUFF PUP LIMITED
发明人
ANTHONY * ALLEN
分类号
E21B21/10;E21B23/00;(IPC1-7):E21B21/10;E21B34/14
主分类号
E21B21/10
代理机构
代理人
主权项
地址
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