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发明名称
Verfahren und Vorrichtung zur Gewinnung von Kohle oder anderen Mineralien
摘要
申请公布号
DE870836(C)
申请公布日期
1953.03.16
申请号
DE1949M000707
申请日期
1949.11.26
申请人
MASCHINENFABRIK;EISENGIESSEREI A. BEIEN
发明人
FRITZSCHE HUGO;NORDSIEK WILHELM
分类号
E21C25/56
主分类号
E21C25/56
代理机构
代理人
主权项
地址
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