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发明名称
Apparatus for sorting out powders according to particle size
摘要
申请公布号
GB659531(A)
申请公布日期
1951.10.24
申请号
GB19490015816
申请日期
1949.06.14
申请人
JOHN GRAHAM CAMPBELL
发明人
分类号
B07B7/01
主分类号
B07B7/01
代理机构
代理人
主权项
地址
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