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经营范围
发明名称
Vacuum cleaner
摘要
申请公布号
US2304868(A)
申请公布日期
1942.12.15
申请号
US19400366673
申请日期
1940.11.22
申请人
JOHN WINTHROP
发明人
WINTHROP JOHN
分类号
A47L7/04
主分类号
A47L7/04
代理机构
代理人
主权项
地址
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