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发明名称
Improvements in rolling mills
摘要
申请公布号
GB312066(A)
申请公布日期
1930.07.17
申请号
GB19290014609
申请日期
1929.05.10
申请人
LOUIS RENE MICHEL
发明人
分类号
B21B37/50
主分类号
B21B37/50
代理机构
代理人
主权项
地址
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