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发明名称
Pressure responsive control device for vacuum cleaners
摘要
申请公布号
US2580643(A)
申请公布日期
1952.01.01
申请号
US19460676318
申请日期
1946.06.12
申请人
ELECTROLUX CORPORATION
发明人
DOUGHMAN FERMAN C.
分类号
A47L9/10;A47L9/19;A47L9/28
主分类号
A47L9/10
代理机构
代理人
主权项
地址
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