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23 h 50 m, 31 dez 1859 ano - Telegraphic Optical Systems (use of flags, or traffic lights)

Adicionado na linha do tempo:

jose luis herrera lozada

ByLuis Edko Herr

11 out 2017

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449

Data:

23 h 50 m, 31 dez 1859 ano

Agora

~ 165 years ago

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