Patent · US Expired

Automatic telephone answering device

US3937893A · kind A · utility

4Cited by
9References
17Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJul 24, 1973
Grant dateFeb 10, 1976
Priority date
Expiry dateJul 24, 1993

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH04M1/6515
  • WIPO fieldTelecommunications
  • WIPO sectorElectrical engineering

Abstract

The invention concerns a device for automatically answering telephone calls, comprising an answering system, with a first magnetic sound recorder for recording and reproducing an answering text and a mechanical driving gear for the first magnetic sound recorder, with a storage system, which comprises a second magnetic sound recorder for recording and playing back the incoming message and a mechanical driving gear for a second magnetic sound recorder, with an action control switch and additional switches for selecting specific functions, with an electrical switching, amplifying and control system for an independent control of the work cycle of the device in its different functions, said control system comprising a mechanism for recording at least a marking signal on the first sound recorder and for the play-back of the recorded marking signal in order to switch the device from its operating condition of playing back the call answering text, to the operating condition of recording the incoming information or in case of a premature ending of the play-back of the call answering text.

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