Telephone line tester
US4600810A · kind A · utility
30Cited by
4References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 7, 1984 |
| Grant date | Jul 15, 1986 |
| Priority date | — |
| Expiry date | Sep 7, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/24
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A telephone line tester is a self-contained unit which, when plugged into a premise wiring telephone jack, determines whether or not a signal of adequate power is being received. If a satisfactory signal is received, the tester will give a visual indication thereby denoting the operating condition of the telephone normally connected to the jack.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.