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20 janv. 1971 - Nuevo evento

Description:

Como resultado del desarrollo de nuevos materiales semiconductores, los LED se producen en nuevos colores: verde, naranja y amarillo. El rendimiento y la efectividad del LED continúa mejorando.

Ajouté au bande de temps:

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ByBastian Quillay Tapia
19 août 2019
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134

Date:

20 janv. 1971
Maintenaint
~ Il y a 54 ans
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