Multi-compartment envelope
US3979051A · kind A · utility
48Cited by
7References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 23, 1975 |
| Grant date | Sep 7, 1976 |
| Priority date | — |
| Expiry date | Jun 23, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D27/08
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A multi-compartment envelope which is resistant to tearing includes a first sheet folded along a medial line to define a front and back panel and a second sheet whose margins are adhesively secured to the interior surface of the front panel. A slot in the front panel permits access to the pocket formed by said front panel and the second sheet adhered thereto while a second pocket is formed in the envelope by adhesively securing lateral flaps on the back panel to the front surface of the front panel thereby providing a reinforced construction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.