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发明名称
Push-broom-type vacuum cleaner
摘要
申请公布号
US2187164(A)
申请公布日期
1940.01.16
申请号
US19370122196
申请日期
1937.01.21
申请人
QUADREX CORPORATION
发明人
LEATHERS WARD
分类号
A47L5/24
主分类号
A47L5/24
代理机构
代理人
主权项
地址
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