Ring binders
US5931506A · kind A · utility
3Cited by
2References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 1, 1996 |
| Grant date | Aug 3, 1999 |
| Priority date | — |
| Expiry date | Oct 1, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB42B5/10
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A folder comprising an upper cover for a ring binder has a lip 13 which is arranged to fit into a normal ring binder press. The lip and a bundle of sheets can then be formed with slots to receive the ring binder in conventional manner. The lower cover 10 has a fold line 14 to allow it to remain free of the press and to wrap around the ring binder and cover the bundle of sheets. The folder itself has no holes in it and can be formed of virtually any material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.