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发明名称
Filtering method and apparatus
摘要
申请公布号
US1797248(A)
申请公布日期
1931.03.24
申请号
US19270207123
申请日期
1927.07.20
申请人
AMERICAN ANODE INC.
发明人
SZEGVARI ANDREW;SPENCER CHARLES M.
分类号
B01D33/00
主分类号
B01D33/00
代理机构
代理人
主权项
地址
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