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发明名称
Hylseventil og fremgangsmåte til etablering av regulerbar fluidström
摘要
申请公布号
NO20013210(D0)
申请公布日期
2001.06.26
申请号
NO20010003210
申请日期
2001.06.26
申请人
ZIEBEL AS
发明人
分类号
E21B34/14;E21B43/11;(IPC1-7):E21B
主分类号
E21B34/14
代理机构
代理人
主权项
地址
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