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11 h 15 m, 23 jul 1956 ano - BEEPER

Descrição:

la compañia multitone Electronics inventa el Beeper para el hospital de St. Thomas de londres que su funcion es alertar a los doctores

Adicionado na linha do tempo:

dispositivos moviles

ByElias Resendiz
10 fev 2018

Data:

11 h 15 m, 23 jul 1956 ano
Agora
~ 67 years ago
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