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发明名称
Filtering material
摘要
申请公布号
US1893048(A)
申请公布日期
1933.01.03
申请号
US19270211949
申请日期
1927.08.10
申请人
AMERICAN AIR FILTER COMPANY, INC.
发明人
BIRKHOLZ HANS E.
分类号
B01D46/52
主分类号
B01D46/52
代理机构
代理人
主权项
地址
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