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经营范围
发明名称
Air filter
摘要
申请公布号
US1863456(A)
申请公布日期
1932.06.14
申请号
US19300466301
申请日期
1930.07.07
申请人
FRANK SMITH
发明人
SMITH FRANK
分类号
F02M35/09
主分类号
F02M35/09
代理机构
代理人
主权项
地址
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