| 发明名称 |
Roll neck seal |
| 摘要 |
|
| 申请公布号 |
US2647778(A) |
申请公布日期 |
1953.08.04 |
| 申请号 |
US19490112030 |
申请日期 |
1949.08.24 |
| 申请人 |
SHIELDS RUBBER COMPANY |
发明人 |
SHIELDS JACK E. |
| 分类号 |
B21B31/07 |
主分类号 |
B21B31/07 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
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