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经营范围
发明名称
Screening apparatus
摘要
申请公布号
US1860480(A)
申请公布日期
1932.05.31
申请号
US19300437223
申请日期
1930.03.19
申请人
ROYER FOUNDRY & MACHINE COMPANY
发明人
ROYER GEORGE F.
分类号
B22C5/06
主分类号
B22C5/06
代理机构
代理人
主权项
地址
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