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1 Jan 1921 Jahr - The first car-to-car radios are used

Beschreibung:

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.

Zugefügt zum Band der Zeit:

History of Cellphones

8 Nov 2017

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539

Datum:

1 Jan 1921 Jahr

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~ 104 years ago

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