| 发明名称 |
COMBINATION OF SCREW AND SCREW DRIVER BIT |
| 摘要 |
<p>A combination of a screw and a screw driver bit and a header punch for its manufacture capable of effectively preventing a come-out phenomenon of the screw driver bit by improving the structure of a groove part in a cross groove of a screw to prevent a conventional damage. <IMAGE></p> |
| 申请公布号 |
EP1245839(A1) |
申请公布日期 |
2002.10.02 |
| 申请号 |
EP20000985868 |
申请日期 |
2000.12.25 |
| 申请人 |
TOTSU, KATSUYUKI |
发明人 |
TOTSU, KATSUYUKI |
| 分类号 |
B21K1/46;B21K1/48;B25B15/00;F16B23/00;(IPC1-7):F16B23/00 |
主分类号 |
B21K1/46 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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