Electronic time measuring apparatus including past record display means
US4831605A · kind A · utility
18Cited by
2References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 23, 1987 |
| Grant date | May 16, 1989 |
| Priority date | — |
| Expiry date | Mar 23, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04G9/126
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An electronic stop watch measures an elapsed time, and stores each measured elapsed time together with measurement date data. The measurement date data is also read out and displayed when the stored elapsed time is read out and displayed, so as to represent when the readout and displayed elapsed time was measured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.