| 发明名称 |
Multiple drilling device |
| 摘要 |
|
| 申请公布号 |
US2357728(A) |
申请公布日期 |
1944.09.05 |
| 申请号 |
US19420448388 |
申请日期 |
1942.06.25 |
| 申请人 |
EVA DE ANGUERA |
发明人 |
ANGUERA PHILIP DE |
| 分类号 |
B23B39/18;B23B41/00 |
主分类号 |
B23B39/18 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
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