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发明名称
AIR FILTER FOR VENTILATING SYSTEMS
摘要
申请公布号
CA372208(A)
申请公布日期
1938.03.01
申请号
CAD372208
申请日期
申请人
THE UNIVERSAL AIR FILTER CORPORATION
发明人
CHARLES CHRISTOFFERSON
分类号
主分类号
代理机构
代理人
主权项
地址
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