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经营范围
发明名称
Rolling mill
摘要
申请公布号
US1786793(A)
申请公布日期
1930.12.30
申请号
US19250031609
申请日期
1925.05.20
申请人
THE AMERICAN ROLLING MILL COMPANY
发明人
TYTUS JOHN B.
分类号
B21B1/34
主分类号
B21B1/34
代理机构
代理人
主权项
地址
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