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发明名称
Procédé pour réduire des minerais sans fusion
摘要
申请公布号
FR716511(A)
申请公布日期
1931.12.22
申请号
FRD716511
申请日期
1931.05.04
申请人
A. JOHNSON & CO
发明人
分类号
C22B5/00;C22B5/10
主分类号
C22B5/00
代理机构
代理人
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地址
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