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发明名称
Improvements in and relating to the production of pig iron
摘要
申请公布号
GB487439(A)
申请公布日期
1938.06.21
申请号
GB19370005796
申请日期
1937.02.26
申请人
OLE ROLFSEN
发明人
分类号
C21B5/00;C21B5/02
主分类号
C21B5/00
代理机构
代理人
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