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
~ 251 г назад