Repertory dialer logic
US4029908A · kind A · utility
7Cited by
7References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 24, 1975 |
| Grant date | Jun 14, 1977 |
| Priority date | — |
| Expiry date | Nov 24, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/276
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
For use in a telephone repertory dialer in which telephone number data is stored on a magnetic recording surface, logic circuitry for entry of telephone number data onto the recording surface or for readout of data from the recording surface for dialing out a telephone number. The logic includes an electronic memory for storing a single telephone number and through which all telephone number data is conveyed for both recording and readout.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.