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1 janv. 1870 - Quadruplex telegraph

Description:

Thomas Edison invents the quadruplex telegraph after becoming a well-known inventor. The quadruplex telegraph could transmit to signals in two different directions on the same wire.

Ajouté au bande de temps:

Thomas Edison

ByEmma
14 nov. 2017

Date:

1 janv. 1870
Maintenaint
~ Il y a 154 ans
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