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1 ene 1774 año - Electric Telegraph (1774)

Descripción:

Georges Louis Lesage patents the electric telegraph. Electric Telegraph uses electric signals to send communication via radio or line. This was used as a communication of people but only inside the same country.

Añadido al timeline:

fecha:

1 ene 1774 año
Ahora mismo
~ 251 years ago

Fotos: