Clock adjustment switch system
US4421418A · kind A · utility
22Cited by
5References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 2, 1982 |
| Grant date | Dec 20, 1983 |
| Priority date | — |
| Expiry date | Apr 2, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04G5/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A clock adjustment switch system for a clock having a display panel, such as an optoelectronic or liquid crystal display panel, and a transparent cover fit over the display panel. Transparent touch-switches for adjusting the timekeeping or other function of the clock are provided on the transparent cover and luminous indicator means are provided at corresponding positions on the display panel. The time switches are made operative and the luminous indicator means are lit only when the clock adjustment function has been made operative by another switch provided on the transparent cover.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.