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发明名称
AUFBAU-STEUERSYSTEM FÜR ROHRE
摘要
申请公布号
DE60331262(D1)
申请公布日期
2010.03.25
申请号
DE20036031262
申请日期
2003.10.09
申请人
VARCO I/P INC.
发明人
KRACIK, JOHN;RIJZINGEN, HANS VAN
分类号
E21B3/00;E21B19/16
主分类号
E21B3/00
代理机构
代理人
主权项
地址
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