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发明名称
VORRICHTUNG ZUM ENTFERNEN VON PACKERN
摘要
申请公布号
DE60323624(D1)
申请公布日期
2008.10.30
申请号
DE20036023624
申请日期
2003.05.06
申请人
NATIONAL-OILWELL, L.P.
发明人
STREATER, JAMES R.
分类号
E21B31/20;E21B29/00
主分类号
E21B31/20
代理机构
代理人
主权项
地址
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