Battery check device for cameras
US5070357A · kind A · utility
10Cited by
2References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 3, 1990 |
| Grant date | Dec 3, 1991 |
| Priority date | — |
| Expiry date | Dec 3, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B7/26
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The battery check device for cameras comprises a counting device for counting the number of times photographing is performed by cameras, a detecting means for detecting the remainder of the capacity of batteries, and a determining device for determining the number of the remaining pictures which can be taken on the basis of the detected remainder of the capacity of batteries.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.