| 发明名称 |
Self-tapping screws |
| 摘要 |
|
| 申请公布号 |
US2827820(A) |
申请公布日期 |
1958.03.25 |
| 申请号 |
US19560559181 |
申请日期 |
1956.01.16 |
| 申请人 |
|
发明人 |
VELLIER WILLIAM A. DE |
| 分类号 |
F16B25/00 |
主分类号 |
F16B25/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
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