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发明名称
Verfahren und Vorrichtung zum Roesten und Reduzieren von Erzen im Drehrohrofen
摘要
申请公布号
DE488950(C)
申请公布日期
1930.01.11
申请号
DE1928D055381D
申请日期
1928.04.01
申请人
FREDERICK LINDLEY DUFFIELD
发明人
分类号
C21B13/14
主分类号
C21B13/14
代理机构
代理人
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