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发明名称
ERDBOHREINRICHTUNG
摘要
申请公布号
AT1031(U1)
申请公布日期
1996.09.25
申请号
AT19950000304U
申请日期
1995.06.06
申请人
HEISS JOSEF
发明人
分类号
E21B11/00;E21B19/087;(IPC1-7):E21B11/00
主分类号
E21B11/00
代理机构
代理人
主权项
地址
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