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4 ч 6 дек 1878 г. - Switch board

Описание:

The first phone with a manual switch board was invented in 1878 and it was first debuted in Boston

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The History of Phones Timeline

BySathmini BATAGODA

29 ноя 2017

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807

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4 ч 6 дек 1878 г.

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~ 146 г назад

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