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发明名称
Improvements in vacuum cleaners
摘要
申请公布号
GB768482(A)
申请公布日期
1957.02.20
申请号
GB19550009632
申请日期
1955.04.01
申请人
CLEMENTS MFG. CO.
发明人
THORNWALD EVERETT D.
分类号
A47L5/32
主分类号
A47L5/32
代理机构
代理人
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