Envelope assembly
US4010889A · kind A · utility
13Cited by
5References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 9, 1975 |
| Grant date | Mar 8, 1977 |
| Priority date | — |
| Expiry date | Oct 9, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB42D5/025
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A sealed envelope is pre-stuffed with at least one insert sheet which is positively held in place against any shifting movements relative to the envelope by retention elements attached only to the envelope and in abutting engagement with marginal edges of the insert sheets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.