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1 jan 1921 ano - The first car-to-car radios are used

Descrição:

The Detroit Police Department began using mobile radios in their police cars. They used them to talk between cars, but it didn't work very well.

Adicionado na linha do tempo:

History of Cellphones

8 nov 2017

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539

Data:

1 jan 1921 ano

Agora

~ 104 years ago

Imagens:

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