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18 ore 8 min, 31 dic 1902 anni - Lee De Forest inventa el bulbo o valvula de vacio.
Aggiunto al nastro di tempo:
Inteligencia Artificial
By
Juan L. Lawliet
8 feb 2018
0
0
390
Data:
18 ore 8 min, 31 dic 1902 anni
Adesso
~ 121 years ago
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