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发明名称
KUPPLUNG FÜR ANKERSTANGEN
摘要
申请公布号
ATA52192(A)
申请公布日期
1994.02.15
申请号
AT19920000521
申请日期
1992.03.16
申请人
GD-ANKER-MAI-PUMP GESELLSCHAFT M.B.H.
发明人
分类号
E21B17/042;(IPC1-7):E21B17/02
主分类号
E21B17/042
代理机构
代理人
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