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经营范围
发明名称
AIR FILTERING APPARATUS
摘要
申请公布号
GB1482262(A)
申请公布日期
1977.08.10
申请号
GB19740029172
申请日期
1974.07.01
申请人
DRAGERWERK AG
发明人
分类号
A61L9/20;F24F3/16;(IPC1-7):B01D46/52;A61L1/00
主分类号
A61L9/20
代理机构
代理人
主权项
地址
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