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发明名称
Filtering means
摘要
申请公布号
US1813073(A)
申请公布日期
1931.07.07
申请号
US19280280638
申请日期
1928.05.25
申请人
NAUGLE JOHN J
发明人
NAUGLE JOHN J.
分类号
B01D33/00
主分类号
B01D33/00
代理机构
代理人
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