| 发明名称 |
Drawing board |
| 摘要 |
|
| 申请公布号 |
US1906300(A) |
申请公布日期 |
1933.05.02 |
| 申请号 |
US19310580235 |
申请日期 |
1931.12.11 |
| 申请人 |
YAXLEY WILLIAM E |
发明人 |
YAXLEY WILLIAM E. |
| 分类号 |
A47B27/00;B43L5/02 |
主分类号 |
A47B27/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
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