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经营范围
发明名称
Continuous fluid circulation valve for well drilling
摘要
申请公布号
GB0922360(D0)
申请公布日期
2010.02.03
申请号
GB20090022360
申请日期
2009.12.21
申请人
TIW CORPORATION
发明人
分类号
主分类号
代理机构
代理人
主权项
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