Method of making a U-shaped closure tamper evident
US4944172A · kind A · utility
36Cited by
4References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 14, 1988 |
| Grant date | Jul 31, 1990 |
| Priority date | — |
| Expiry date | Nov 14, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/479
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An improved, integral, U-shaped metal clip for use as a closure includes a textured surface to enhance the strength of the clip and to evidence tampering. The texturing may be effected by one or more working steps on the surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.