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Pagers Invented in 1921, pagers were used by the Detroit Police Department when they successfully put a radio-equipped police car into service. (5 jan 1921 ano – 11 ago 1925 ano)

Adicionado na linha do tempo:

Geography Task

Bysoap_.y
11 ago 2023
0
0
138

Data:

5 jan 1921 ano
11 ago 1925 ano
~ 4 years and 7 months
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