Disposal emergency cellular phone
US6115597A · kind A · utility
182Cited by
10References
4Claims
0Family size
Inventors
Key dates
| Filing date | Jul 16, 1997 |
| Grant date | Sep 5, 2000 |
| Priority date | — |
| Expiry date | Jul 16, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2215/32
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention teaches an economical disposable emergency cellular phone. A further object of the invention is a new technique for having a large number of cellular phones share the same small group of access numbers and serial numbers in order to reduce the monthly charges to zero for the end consumer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.