Gusseted pinch bottom bag
US4008850A · kind A · utility
51Cited by
12References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 22, 1972 |
| Grant date | Feb 22, 1977 |
| Priority date | — |
| Expiry date | Feb 22, 1992 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D31/10
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A sift-proof, leak-proof bag formed from a gusseted, multi-walled tube of paper having stepped plies and bag walls at each end of the tube for attachment to the bag side walls to provide closed bag ends.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.