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发明名称
Mulling apparatus
摘要
申请公布号
US2303387(A)
申请公布日期
1942.12.01
申请号
US19390258358
申请日期
1939.02.25
申请人
THE BEARDSLEY & PIPER COMPANY
发明人
PIPER WALTER F.
分类号
B02C15/02;B22C5/04
主分类号
B02C15/02
代理机构
代理人
主权项
地址
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