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发明名称
SICHERHEITSSCHALTSYSTEM FÜR ROHRSPANNGERÄTE
摘要
申请公布号
AT251269(T)
申请公布日期
2003.10.15
申请号
AT19970110337T
申请日期
1997.06.25
申请人
WEATHERFORD/LAMB, INC.
发明人
JAENSCH, MANFRED
分类号
E21B19/07;(IPC1-7):E21B19/07
主分类号
E21B19/07
代理机构
代理人
主权项
地址
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