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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. (jan 5, 1921 – aug 11, 1925)
Added to timeline:
Geography Task
By
soap_.y
11 Aug 2023
0
0
137
Date:
jan 5, 1921
aug 11, 1925
~ 4 years and 7 months
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