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发明名称
Vacuum cleaner
摘要
申请公布号
US2327181(A)
申请公布日期
1943.08.17
申请号
US19400332512
申请日期
1940.04.30
申请人
ELECTRIC VACUUM CLEANER COMPANY, INC.
发明人
DUNBAR RALPH E.
分类号
A47L5/36;A47L7/00;A47L9/19
主分类号
A47L5/36
代理机构
代理人
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地址
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