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经营范围
发明名称
Vacuum cleaner
摘要
申请公布号
US2277069(A)
申请公布日期
1942.03.24
申请号
US19390265318
申请日期
1939.03.31
申请人
BURWELL MAUREL G
发明人
BURWELL MAUREL G.
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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