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发明名称
Bore selector
摘要
申请公布号
GB2362400(B)
申请公布日期
2002.05.22
申请号
GB20000012207
申请日期
2000.05.19
申请人
* FMC CORPORATION
发明人
SCOTT MITCHELL * HAMILTON
分类号
E21B23/12;E21B33/076;E21B34/04;(IPC1-7):E21B23/12
主分类号
E21B23/12
代理机构
代理人
主权项
地址
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