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经营范围
发明名称
Flow biased sequencing valve
摘要
申请公布号
GB0512267(D0)
申请公布日期
2005.07.27
申请号
GB20050012267
申请日期
2005.06.16
申请人
SCHLUMBERGER HOLDINGS LIMITED
发明人
分类号
E21B21/08;E21B21/10;E21B34/06;E21B34/10;E21B47/00;E21B47/12
主分类号
E21B21/08
代理机构
代理人
主权项
地址
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