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发明名称
Vortriebsbohle
摘要
申请公布号
DE578557(C)
申请公布日期
1933.06.15
申请号
DED578557D
申请日期
1930.12.18
申请人
HOCHTIEF AKT.-GES. FUER HOCH- UND TIEFBAUTEN VORM. GEBR. HELFMANN
发明人
GAEDE DR.-ING. KURT
分类号
E21D19/04
主分类号
E21D19/04
代理机构
代理人
主权项
地址
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