Switch structure for electronic timepiece
US4257115A · kind A · utility
48Cited by
8References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 10, 1978 |
| Grant date | Mar 17, 1981 |
| Priority date | — |
| Expiry date | Feb 10, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04G13/026
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A switch structure for an analog quartz crystal timepiece having a watchglass plate, a time dial to display time in an analog mode, and a digital display device, which switch structure comprises a plurality of transparent electrically conductive electrode films provided on the watchglass plate at positions corresponding to numerical display indicia on the time dial to permit generation of input signals corresponding to the numerical display indicia, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.