An auxiliary dialing system for a mobile telephone of the type having a handset coupled with a radio transceiver by a data transmission line comprises a data process and control module having a microprocessor and data storage devices. The data process and control module includes a key pad for entering...http://www.google.fr/patents/US4852146?utm_source=gb-gplus-shareBrevet US4852146 - Auxiliary dialing system for mobile telephones
