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经营范围
发明名称
Rolling mill structure
摘要
申请公布号
US1960900(A)
申请公布日期
1934.05.29
申请号
US19320642347
申请日期
1932.11.12
申请人
ERNEST DREXLER
发明人
DREXLER ERNEST
分类号
B21B39/12
主分类号
B21B39/12
代理机构
代理人
主权项
地址
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