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发明名称
Improvements relating to nozzles for vacuum cleaners
摘要
申请公布号
GB342856(A)
申请公布日期
1931.02.12
申请号
GB19290039892
申请日期
1929.12.31
申请人
CARL OTTO
发明人
分类号
A47L9/04
主分类号
A47L9/04
代理机构
代理人
主权项
地址
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