Leak resistant closure
US4429825A · kind A · utility
4Cited by
7References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 7, 1982 |
| Grant date | Feb 7, 1984 |
| Priority date | — |
| Expiry date | Sep 7, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2543/00555
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A generally, sift-proof or liquid-resistant container formed from a unitary sheet of paperboard having overlapped end portions secured in a single lap joint with the inner end portion presenting an upwardly facing surface for closing the space between the container body and lid in the area of the lap joint.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.