Laminar sheet construction
US5271992A · kind A · utility
7Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 22, 1991 |
| Grant date | Dec 21, 1993 |
| Priority date | — |
| Expiry date | Feb 22, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/456
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Graphic laminar sheet material in which a barrier layer separates a base layer and an eradicable layer of color contrasting with the base layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.