Alphanumeric display means for computer-linked typewriter consoles using a plurality of gaseous glow indicator tube means containing an ionizable gas
US3934243A · kind A · utility
1Cited by
3References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 5, 1973 |
| Grant date | Jan 20, 1976 |
| Priority date | — |
| Expiry date | Nov 5, 1993 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/969
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The present invention relates to an alphanumeric display unit means for improving the identification quantities at selected key buttons of a computer-linked typewriter console through usage of light-emitting identification indicia attached adjacent to or at the selected key buttons. Each light-emitting display comprises a gaseous glow indicator tube means containing an ionizable gas selectively activated through controller switch means so as to provide a gas glow pattern corresponding to an alphanumeric indicium for which display is sought.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.