Serial time read out apparatus
US3938317A · kind A · utility
13Cited by
3References
10Claims
0Family size
Inventor
Key dates
| Filing date | Aug 10, 1974 |
| Grant date | Feb 17, 1976 |
| Priority date | — |
| Expiry date | Aug 10, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04G13/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Time keeping apparatus is disclosed in which time is decoded either orally or tactilely by visually handicapped persons.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.