Portable phone bank
US6490458B1 · kind B1 · utility
4Cited by
18References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 16, 1999 |
| Grant date | Dec 3, 2002 |
| Priority date | — |
| Expiry date | Jun 16, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2215/32
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A portable telephone bank includes a group of public telephones connected to a central communication unit. The public telephones permit callers to place telephone calls over a public telephone network. Each of the telephones includes a portable handset that permits a caller to roam within a predetermined range of the portable telephone bank. The central communication unit transmits communication signals from the telephones to the public telephone network via wireless communication channels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.