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发明名称
Filter construction
摘要
申请公布号
US2594650(A)
申请公布日期
1952.04.29
申请号
US19490119339
申请日期
1949.10.03
申请人
HUPPERTZ GEORGE C
发明人
HUPPERTZ GEORGE C.
分类号
B01D35/02
主分类号
B01D35/02
代理机构
代理人
主权项
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