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发明名称
Window cleaning device
摘要
申请公布号
US2511346(A)
申请公布日期
1950.06.13
申请号
US19460675628
申请日期
1946.06.10
申请人
NELLIE KENNEDY
发明人
KENNEDY NELLIE
分类号
A47L1/09
主分类号
A47L1/09
代理机构
代理人
主权项
地址
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