Telephone having a handset and a rase each having a receiver and microphone
US4817138A · kind A · utility
9Cited by
9References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 13, 1988 |
| Grant date | Mar 28, 1989 |
| Priority date | — |
| Expiry date | Apr 13, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/715
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The telephone comprises a handset (8) having a receiver and a microphone, and a base (2) on which the handset may be placed. According to the invention, the casing (28) of the base is fitted with another receiver and another microphone and has a shape such that the base may be used as a second handset, thereby enabling two people to converse at the same time with one outside person if the phone is connected to one line or with different outside people if the phone is connected to two lines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.