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经营范围
发明名称
Suction cleaner having filter structure encasing and supported by an electric cord
摘要
申请公布号
US2738538(A)
申请公布日期
1956.03.20
申请号
US19510218943
申请日期
1951.04.03
申请人
THE HOOVER COMPANY
发明人
VANCE JOHN E.
分类号
A47L9/14;A47L9/28
主分类号
A47L9/14
代理机构
代理人
主权项
地址
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