Two-way bar code window envelope
US4993624A · kind A · utility
26Cited by
10References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 26, 1990 |
| Grant date | Feb 19, 1991 |
| Priority date | — |
| Expiry date | Apr 26, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/80
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A two-way reusable envelope useful for commercial mass-mailings is disclosed. The envelope includes a window aligned along the bottom right-hand edge of the front envelope panel, thereby enabling standard Postal Service zip code bar code markings to be visible during both trips of the two-way envelope. The envelope additionally includes a two-portion closure flap which enables Facing Identification Marks and appropriate postage to be visible from the front of the envelope only during one trip as appropriate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.