Multi-use envelope
US5927595A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 20, 1998 |
| Grant date | Jul 27, 1999 |
| Priority date | — |
| Expiry date | Jul 20, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D27/06
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A multi-use envelope for at least two mailings comprises opposed front and rear panels foldably connected together at their bottom edges and secured together at their side edges by side closure flaps to form an envelope structure. The improvement comprises a pair of closure flaps foldably attached respectively to the top edges of each of the front and rear panels wherein each closure flap has an independent means for sealing and opening the envelope. A first closure flap is folded inside the envelope for the first mailing while the other closure flap is used to close the envelope. Upon receipt, the first closure flap is folded outside the envelope for use in closing the envelope for the second mailing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.