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发明名称
Procédé de réduction à double étage du minerai de fer
摘要
申请公布号
FR1270509(A)
申请公布日期
1961.09.01
申请号
FR19570737986
申请日期
1957.05.06
申请人
UNITED STATES STEEL CORPORATION
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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