| 发明名称 |
Fastening binder ring mechanisms to binders |
| 摘要 |
Ring binder mechanism with special pronged fasteners secured thereto for fastening it to a binder, the special fastener per se, and a method of making the fasteners involving sheet metal stamping.
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| 申请公布号 |
US2003053849(A1) |
申请公布日期 |
2003.03.20 |
| 申请号 |
US20010954095 |
申请日期 |
2001.09.17 |
| 申请人 |
WORLD WIDE STATIONERY MANUFACTURING COMPANY LTD. |
发明人 |
TO CHUN YUEN;NG WENG IO |
| 分类号 |
B42F13/00;(IPC1-7):B42F3/00 |
主分类号 |
B42F13/00 |
| 代理机构 |
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代理人 |
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| 地址 |
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