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18 h 8 m, 31 dic 1902 año - Lee De Forest inventa el bulbo o valvula de vacio.

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Inteligencia Artificial

ByJuan L. Lawliet
8 feb 2018
0
0
400

fecha:

18 h 8 m, 31 dic 1902 año
Ahora mismo
~ 121 years ago
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