发明申请
- 专利标题： Page lifting spring
- 专利标题（中）： 页升降弹簧
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申请号： US11194312申请日： 2005-08-01
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公开(公告)号： US20060024126A1公开(公告)日： 2006-02-02
- 发明人: Kenneth Johansson , John Brady
- 申请人： Kenneth Johansson , John Brady
- 主分类号： B42F13/00
- IPC分类号： B42F13/00
摘要：
Described is an improvement to a loose-leaf binder, also known as a loose-leaf notebook, to facilitate moving the covers and pages from an open position to a closed position without the intervention of special closing techniques. With the system created with this invention, the binder covers are simply closed.
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