Electronic time measuring apparatus including past record display means
US4991156A · kind A · utility
16Cited by
1References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 15, 1988 |
| Grant date | Feb 5, 1991 |
| Priority date | — |
| Expiry date | Dec 15, 2008 |
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.