| 发明名称 |
Door closer |
| 摘要 |
|
| 申请公布号 |
US2586135(A) |
申请公布日期 |
1952.02.19 |
| 申请号 |
US19490121469 |
申请日期 |
1949.10.15 |
| 申请人 |
WOODRUFF BEN H |
发明人 |
WOODRUFF BEN H. |
| 分类号 |
E05F3/10;E05F3/22 |
主分类号 |
E05F3/10 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
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