Martin Cooper and his invention: the mobile phone

Martin Cooper and his invention: the mobile phone

When Martin Cooper was 42 (forty-two), he made the first
telephone call with the first mobile phone, he invented the
mobile phone in 1973 when he was working for Motorola Company.
The name of the first mobile phone was: Motorola Dyna TAC 8000 x,
and it appeared in 1983. It was 750 grams.
On the third of april of 1973, thanks to Cooper, somebody
carried this invention to different places, and they could comunicate
with him.
Martin Cooper was born in 1930, he studied in Chicago;
he finished his degree of engineering in the institute of Tecnology
of Illinois.