NEW YORK CITY -- On April 3, 1973, Martin Cooper stood on a sidewalk on sixth avenue in Manhattan with a device the size of a brick and made the first public call from a cell phone to one of the men ...
DEL MAR, Calif. (AP) — Dick Tracy got an atom-powered two-way wrist radio in 1946. Marty Cooper never forgot it. The Chicago boy became a star engineer who ran Motorola’s research and development arm ...
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