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经营范围
发明名称
Vacuum cleaner
摘要
申请公布号
US2300938(A)
申请公布日期
1942.11.03
申请号
US19410399474
申请日期
1941.06.24
申请人
ELECTRIC VACUUM CLEANER COMPANY, INC.
发明人
LANG HENRY T.;DUNBAR RALPH E.;HRACH JOSEPH
分类号
A47L5/32
主分类号
A47L5/32
代理机构
代理人
主权项
地址
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