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mobile telephone
The Detroit Police Department, began experimentation with one-way vehicular mobile service. -
Period: to
cell phones
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mobile telephone
Alton Dickieson, H.I. Romnes and D. Mitchell begin design of AT&T's mobile phone system -
mobile telephone
A driver in St. Louis, Mo., placed a phone call,it was the first AT&T mobile telephone call. -
Mobile phones
Richard Frenkiel and Joel Engel of AT&T applied computers and electronics to make it work. -
mobile telephone
Martin Cooper of Motorola made the first cellphone call to his rival Joe Engel of AT&T BellLabs -
mobile telephone
FCC granted commercial licenses to an AT&T subsidiary, Advanced Mobile Phone Service
