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1 gen 1774 anni - Electric Telegraph (1774)

Descrizione:

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.

Aggiunto al nastro di tempo:

Data:

1 gen 1774 anni
Adesso
~ 250 years ago

Immagini: