Self-correcting clock
US5881023A · kind A · utility
6Cited by
4References
5Claims
0Family size
Inventors
Key dates
| Filing date | Oct 7, 1997 |
| Grant date | Mar 9, 1999 |
| Priority date | — |
| Expiry date | Oct 7, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04R20/14
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A clock synchronized by date and time information taken from Caller ID information packets delivered with incoming calls on a telephone line provided with Caller ID service.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.