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发明名称
SYSTEM ZUR HANDHABUNG VON ROHREN
摘要
申请公布号
AT201743(T)
申请公布日期
2001.06.15
申请号
AT19930911708T
申请日期
1993.04.29
申请人
DRECO ENERGY SERVICES LTD.
发明人
SOROKAN, RONALD, S.
分类号
E21B19/15;(IPC1-7):E21B19/15
主分类号
E21B19/15
代理机构
代理人
主权项
地址
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