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发明名称
Cleaning device
摘要
申请公布号
US2723412(A)
申请公布日期
1955.11.15
申请号
US19530354505
申请日期
1953.05.12
申请人
HARRIS FORREST W
发明人
HARRIS FORREST W.
分类号
A47L4/02
主分类号
A47L4/02
代理机构
代理人
主权项
地址
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