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经营范围
发明名称
SWITCHABLE CIRCULATING TOOL
摘要
申请公布号
EP2188486(A1)
申请公布日期
2010.05.26
申请号
EP20080788311
申请日期
2008.08.14
申请人
WELLTOOLS LIMITED
发明人
HILLIARD, PAUL
分类号
E21B21/10
主分类号
E21B21/10
代理机构
代理人
主权项
地址
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