Loose leaf binder
US3944374A · kind A · utility
8Cited by
3References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 16, 1973 |
| Grant date | Mar 16, 1976 |
| Priority date | — |
| Expiry date | Aug 16, 1993 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB42F13/28
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A loose leaf binder comprising a backbone having two hinged halves and a flexible displaceable end portion, a flexible displaceable arm linkage mounted on said backbone so that the backbone end portion and linkage cooperate in engaging and disengaging relationship to form multiple positions of the binder including fully opened and fully closed. The binder is capable of being opened by applying opposing forces to the backbone halves and displacing forces to the arm linkage or by applying forces to the backbone halves alone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.