Combination tiered letter tray and vertical file
US4074810A · kind A · utility
82Cited by
9References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 27, 1976 |
| Grant date | Feb 21, 1978 |
| Priority date | — |
| Expiry date | Sep 27, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB42F7/12
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A tiered letter tray comprising at least two trays detachably stacked one upon another by rectangular plastic riser plates and a vertical file comprising at least one L-shaped trough having means at one side of its base for selective attachment to the side of the bottom letter tray, said trough adapted at the other side of its base for selective attachment to one side of a like trough, and an end cap adapted for selective attachment to said one side of the base for using said trough detached from said letter tray.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.