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发明名称
Improved attrition mill
摘要
申请公布号
GB508123(A)
申请公布日期
1939.06.27
申请号
GB19380009503
申请日期
1938.03.28
申请人
WILLIAM HUBERT PAUL BOLL
发明人
分类号
B02C17/08
主分类号
B02C17/08
代理机构
代理人
主权项
地址
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