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经营范围
发明名称
Procédé de réduction d'oxydes de fer par leur traitement dans des fours
摘要
申请公布号
FR818789(A)
申请公布日期
1937.10.04
申请号
FRD818789
申请日期
1937.03.06
申请人
发明人
OLE ROLFSEN
分类号
C21B5/02
主分类号
C21B5/02
代理机构
代理人
主权项
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