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经营范围
发明名称
Centrifugal classifier
摘要
申请公布号
US2642991(A)
申请公布日期
1953.06.23
申请号
US19490117120
申请日期
1949.09.22
申请人
MARSHALL DAVIS JOHN
发明人
DAVIS JOHN MARSHALL
分类号
B04C5/103
主分类号
B04C5/103
代理机构
代理人
主权项
地址
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