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feb 14, 1876 - Téléphone Alexander Graham Bell

Description:

Le 14 février 1876, l'Américain d'origine anglaise Alexander Graham Bell dépose un brevet pour un système de transmission de la voix. Quelques heures plus tard, son compatriote Elisha Gray fait de même.

Added to timeline:

Life

ByJohn Lev
21 Oct 2017
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Date:

feb 14, 1876
Now
~ 149 years ago
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