Telephone equipment protection circuit
US6163447A · kind A · utility
2Cited by
5References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 16, 1998 |
| Grant date | Dec 19, 2000 |
| Priority date | — |
| Expiry date | Jun 16, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/82
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A circuit for protecting telephone/modem equipment from damage, includes a source of a subscriber telephone signal. An energy transfer device is coupled to the subscriber telephone signal source and an inductor coupled between the energy transfer device and the telephone/modem equipment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.