Recirculating folder for direct mail application
US4900391A · kind A · utility
33Cited by
11References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 1988 |
| Grant date | Feb 13, 1990 |
| Priority date | — |
| Expiry date | Dec 19, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31B2170/20
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A sheet recirculating, folding and gluing system folds documents, holds them at a wait station and then inserts them into another sheet which is folded and glued "on-line" to form an envelope.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.