Display having selectable simulated illuminating means
US6098325A · kind A · utility
7Cited by
4References
21Claims
0Family size
Inventor
Key dates
| Filing date | Oct 13, 1998 |
| Grant date | Aug 8, 2000 |
| Priority date | — |
| Expiry date | Oct 13, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F11/23
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a preferred embodiment, a display device, including: a front panel and/or a rear panel having defined therethrough at least two apertures; and an index panel(s) disposed behind the front panel and/or the rear 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 and/or the rear panel. In one aspect of the invention, the display device is a book, with the front panel and/or the rear panel being a page(s) of the book and the index wheel(s) being disposed at the front and/or the rear of the book.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.