Meet-me telephone system with subscriber notification feature
US6104912A · kind A · utility
11Cited by
63References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 25, 1995 |
| Grant date | Aug 15, 2000 |
| Priority date | — |
| Expiry date | Apr 25, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S379/913
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A paging system wherein each user carries a paging device adapted to receive radio frequency signals broadcast from a central paging system with a unique identification code assigned to each paging device. Each paging device includes a radio frequency transmitter and controller for controlling the radio frequency transmitter, the controller being operable in two distinct user selectable modes, the first such mode being responsive to receiving a signal broadcast by the central paging system and responding by transmitting predetermined data back to said central paging system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.