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经营范围
发明名称
Air filter
摘要
申请公布号
US2247326(A)
申请公布日期
1941.06.24
申请号
US19400347747
申请日期
1940.07.26
申请人
GEORGE ZIEMANN EMIL
发明人
ZIEMANN EMIL GEORGE
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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