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经营范围
发明名称
Improvements in or relating to a rolling mill
摘要
申请公布号
GB770374(A)
申请公布日期
1957.03.20
申请号
GB19550011076
申请日期
1955.04.18
申请人
THE NATIONAL MACHINERY COMPANY
发明人
分类号
B21H1/22
主分类号
B21H1/22
代理机构
代理人
主权项
地址
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