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发明名称
Window cleaning device
摘要
申请公布号
US1923813(A)
申请公布日期
1933.08.22
申请号
US19320629074
申请日期
1932.08.16
申请人
ANDREW DIXON
发明人
DIXON ANDREW
分类号
A47L1/03
主分类号
A47L1/03
代理机构
代理人
主权项
地址
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