Scale plate for measuring instruments
US4174500A · kind A · utility
5Cited by
3References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 3, 1977 |
| Grant date | Nov 13, 1979 |
| Priority date | — |
| Expiry date | Oct 3, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R1/08
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A plurality of measurement readout displays electrically insulated from one another are provided on a plate member, each of which displays is performed by making use of an excitable material which is capable of being visible only upon the application of a voltage thereto.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.