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aug 20, 1793 - 1793 Commercial Semaphore System

Description:

Chappe brothers established the first commercial semaphore system between two locations near Paris. Napoleon used it a lot. Semaphore signaling spread to Italy, Germany and Russia. Thousands of men were employed manning the stations. The last operational semaphore system went out of business in 1860, Algeria.

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Telecommunications: A History

ByPaul Duran Jimenez
20 Oct 2017
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Date:

aug 20, 1793
Now
~ 232 years ago
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