发明名称 |
Configuration for paper punch pin |
摘要 |
A punch for punching holes in a stack of sheets of paper having a V-shaped groove with a height based on the thickness of the stack and the forces necessary to drive the punch pin of the punch through the stack of paper.
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申请公布号 |
US5730038(A) |
申请公布日期 |
1998.03.24 |
申请号 |
US19960770020 |
申请日期 |
1996.12.19 |
申请人 |
ACCO USA, INC. |
发明人 |
EVANS, ALFRED J.;KANDASAMY, BALAJI;FENG, DAVID Q. |
分类号 |
B26F1/14;(IPC1-7):B21D22/28 |
主分类号 |
B26F1/14 |
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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