Radiotelephone system adapted to read a credit card
US4845740A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 5, 1988 |
| Grant date | Jul 4, 1989 |
| Priority date | — |
| Expiry date | Dec 5, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M17/023
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A radio phone equipment for credit card is adapted to transfer part or a whole of credit card or charge card information read by a card reader as well as a dial number dialed by a key pad to a mobile telecommunication switching office by means of a modem and a transmitter/receiver, and in case of said credit card or charge card being valid, switching, on the basis of a designation on a voice channel transmitted from said mobile telecommunication switching office, or transmitting and receiving frequency to said voice channel to construct a speech channel, and furthermore detecting on-hook of a handset produced upon finishing talking to reset the equipment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.