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经营范围
发明名称
A collector device for drilling fluid
摘要
申请公布号
GB2462760(A)
申请公布日期
2010.02.24
申请号
GB20090021202
申请日期
2008.06.11
申请人
NATIONAL OILWELL NORWAY AS
发明人
JONATHAN GARRICK WEBB
分类号
E21B33/08;E21B19/16;E21B21/01
主分类号
E21B33/08
代理机构
代理人
主权项
地址
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