Pushbutton electrical switches and pushbuttons therefor
US4131777A · kind A · utility
33Cited by
6References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 18, 1977 |
| Grant date | Dec 26, 1978 |
| Priority date | — |
| Expiry date | Feb 18, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H9/182
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Pushbuttons which are especially useful in illuminating pushbutton electrical switches are provided which have a hollow housing with an open face and sides extending inwardly from said face to an open rear end wherein said face constitutes a frame in which one or more separate resilient flat sheet-like display inserts or colored filters are mounted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.