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发明名称
Semiautomatic nozzle adjustment for suction cleaners
摘要
申请公布号
US2474448(A)
申请公布日期
1949.06.28
申请号
US19430485688
申请日期
1943.05.05
申请人
THE HOOVER COMPANY
发明人
WHITE HARRY B.
分类号
A47L5/34
主分类号
A47L5/34
代理机构
代理人
主权项
地址
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