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发明名称
An improvement in design of control screens employed in hammer mills
摘要
申请公布号
GB568638(A)
申请公布日期
1945.04.13
申请号
GB19430013759
申请日期
1943.08.24
申请人
LEO ST. JOHN COLLEY
发明人
分类号
B02C13/284
主分类号
B02C13/284
代理机构
代理人
主权项
地址
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