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1 янв 1774 г. - Electric Telegraph (1774)

Описание:

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.

Добавлено на ленту времени:

Дата:

1 янв 1774 г.
Сейчас
~ 250 г назад

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