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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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1 ene 1960 año - Nick Holoynak made a red LED with semiconductors
Añadido al timeline:
Light bulb Timeline
By
Sara
2 oct 2018
0
0
424
fecha:
1 ene 1960 año
Ahora mismo
~ 65 years ago
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