Display having selectable simulated illuminating means
US5881482A · kind A · utility
4Cited by
4References
16Claims
0Family size
Inventor
Key dates
| Filing date | Apr 17, 1997 |
| Grant date | Mar 16, 1999 |
| Priority date | — |
| Expiry date | Apr 17, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F11/23
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A display device, including: a front panel having defined therethrough at least two apertures; and an index panel disposed behind the front panel and moveable between at least first and second positions to vary what can be viewed through the at least two apertures by an observer looking at the front panel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.