Illuminated button key
US5234744A · kind A · utility
38Cited by
3References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 17, 1992 |
| Grant date | Aug 10, 1993 |
| Priority date | — |
| Expiry date | Jul 17, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24893
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An illuminated key button is disclosed which is formed of a light permeable hard resin and has on the bottom of the key a print layer which is illuminated from below and is integral with the operating portion of the key button.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.