Communications system
US7043195B2 · kind B2 · utility
12Cited by
8References
40Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 29, 2000 |
| Grant date | May 9, 2006 |
| Priority date | — |
| Expiry date | Nov 29, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W88/085
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A communications system, including at least one base station (8) at the surface, at least one repeater station (6) below the surface, and at least one mobile station (4) below the surface, the stations (4, 6, 8) establishing a bidirectional communications path between the mobile station (4) and the base station (8).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.