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20 h 44 m, 13 fev 1837 ano -

Descrição:

Morse employs Alfred Vail to improve his telegraph from demonstration purposes for a share of future patent rights

Adicionado na linha do tempo:

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ByWilliam Ward
30 out 2018
0
0
147

Data:

20 h 44 m, 13 fev 1837 ano
Agora
~ 187 years ago
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