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发明名称
A METHOD OF FILTERING PUMP NOISE
摘要
申请公布号
EP1759087(A1)
申请公布日期
2007.03.07
申请号
EP20050754084
申请日期
2005.06.20
申请人
NATIONAL OILWELL NORWAY AS
发明人
KYLLINGSTAD, AGE
分类号
E21B;E21B47/18
主分类号
E21B
代理机构
代理人
主权项
地址
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