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经营范围
发明名称
Flow control valve
摘要
申请公布号
GB2411186(B)
申请公布日期
2006.10.04
申请号
GB20050000800
申请日期
2005.01.14
申请人
BJ SERVICES COMPANY
发明人
JOHN E RAVENSBERGEN;DON PIKE;DOUG BRUNSKILL
分类号
E21B4/02;E21B4/00;E21B23/08;E21B37/04;E21B44/00;F03B13/02;F03B15/12;F04B47/08;F04B49/035
主分类号
E21B4/02
代理机构
代理人
主权项
地址
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