Electric timepiece for displaying the operating condition thereof
US3998043A · kind A · utility
28Cited by
9References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 25, 1974 |
| Grant date | Dec 21, 1976 |
| Priority date | — |
| Expiry date | Nov 25, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04G9/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a battery operated electric timepiece operated by a battery of the type including a time display, such as a second hand, when the voltage of the battery decreases below a predetermined value, the movement of the second hand is modified to give an alarm that the life of the battery has terminated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.