A control circuitry for a radio telephone having a transmitter, a receiver, a cradle and a handset. The handset includes a first computer having a stored program control therein, a first memory, a telephone number display and a pushbutton pad. The cradle includes a second computer having a stored program...http://www.google.fr/patents/US4122304?utm_source=gb-gplus-shareBrevet US4122304 - Control circuitry for a radio telephone
