发明名称 |
Suction cleaner |
摘要 |
|
申请公布号 |
US2192397(A) |
申请公布日期 |
1940.03.05 |
申请号 |
US19370169956 |
申请日期 |
1937.10.20 |
申请人 |
THE HOOVER COMPANY |
发明人 |
CARLSON VERNON E. |
分类号 |
A47L9/04 |
主分类号 |
A47L9/04 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|
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