Portable computer powered by rechargeable batteries
US5553294A · kind A · utility
37Cited by
13References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 7, 1993 |
| Grant date | Sep 3, 1996 |
| Priority date | — |
| Expiry date | Jun 7, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J9/061
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
When a computer is not externally powered, it operates from installed first and second batteries. In top surface of the computer, LEDs are provided which indicates three states of each battery; need of charging, during charging, and completion of charging.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.