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4 h, dec 6, 1878 y - Switch board

Description:

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

Added to timeline:

The History of Phones Timeline

BySathmini BATAGODA

29 Nov 2017

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802

Date:

4 h, dec 6, 1878 y

Now

~ 146 years ago

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