| 发明名称 |
Scouring device |
| 摘要 |
|
| 申请公布号 |
US1820183(A) |
申请公布日期 |
1931.08.25 |
| 申请号 |
US19300425866 |
申请日期 |
1930.02.04 |
| 申请人 |
FRANK DARLING J |
发明人 |
DARLING J FRANK |
| 分类号 |
A47L13/022 |
主分类号 |
A47L13/022 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
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