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发明名称
Schrappergefaess fuer die Foerderung von Bergwerksmassengut
摘要
申请公布号
DE517171(C)
申请公布日期
1931.03.07
申请号
DE1929W082803D
申请日期
1929.06.01
申请人
WALTER WOLFF
发明人
分类号
E21F13/06
主分类号
E21F13/06
代理机构
代理人
主权项
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