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经营范围
发明名称
Vacuum cleaner and air filter therefor
摘要
申请公布号
US2814357(A)
申请公布日期
1957.11.26
申请号
US19550486848
申请日期
1955.02.08
申请人
PREMIER COMPANY
发明人
BOWMAN GORDON L.
分类号
A47L9/12
主分类号
A47L9/12
代理机构
代理人
主权项
地址
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