Mobile telephone with amplified listening
US6148080A · kind A · utility
16Cited by
1References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 28, 1998 |
| Grant date | Nov 14, 2000 |
| Priority date | — |
| Expiry date | Jul 28, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/03
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
This invention discloses a mobile telephone of the cordless or cellular type which has a front face including an earphone and a microphone, and a back face. According to the invention, the opening area of the loudspeaker is situated, through the wall of the telephone, around a circular area of 27 mm in diameter, called closing area, situated opposite the loudspeaker and sound-proof on transmission.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.