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发明名称
Improvements in and relating to vacuum cleaners
摘要
申请公布号
GB356575(A)
申请公布日期
1931.09.10
申请号
GB19300035121
申请日期
1930.11.21
申请人
THEODORE ELLSWORTH LERCH
发明人
分类号
A47L9/04
主分类号
A47L9/04
代理机构
代理人
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