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发明名称
Improved sifting device
摘要
申请公布号
GB532039(A)
申请公布日期
1941.01.16
申请号
GB19390023360
申请日期
1939.08.14
申请人
ROBERT MELDAU
发明人
分类号
B07B4/00
主分类号
B07B4/00
代理机构
代理人
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