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发明名称
Down draft room
摘要
申请公布号
US1825542(A)
申请公布日期
1931.09.29
申请号
US19270191024
申请日期
1927.05.13
申请人
THE AMERICAN FOUNDRY EQUIPMENT COMPANY
发明人
PEIK LOUIS D.
分类号
B24C9/00
主分类号
B24C9/00
代理机构
代理人
主权项
地址
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