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经营范围
发明名称
Vacuum cleaner
摘要
申请公布号
US2564734(A)
申请公布日期
1951.08.21
申请号
US19480056802
申请日期
1948.10.27
申请人
BIRTMAN ELECTRIC COMPANY
发明人
SPARKLIN CHARLES H.
分类号
A47L9/20
主分类号
A47L9/20
代理机构
代理人
主权项
地址
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