Patent · US Expired

Relay circuit for telephone interface

US5748719A · kind A · utility

0Cited by
8References
12Claims
0Family size

Assignee

Inventors

Key dates

Filing dateDec 22, 1995
Grant dateMay 5, 1998
Priority date
Expiry dateDec 22, 2015

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH04M1/738
  • WIPO fieldTelecommunications
  • WIPO sectorElectrical engineering

Abstract

A reduced number of relays are used in a voice/data/fax modem system. This reduced relay design eliminates at least one relay required in prior art systems thereby reducing the amount of geography used in producing the resultant device. This saves space, reduces costs, and provides a more reliable device.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.