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2 ene 1940 año - English physicists John Randall and Harry Boot develop a compact magnetron for use in aeroplane radar navigation systems
Añadido al timeline:
20th Century
By
Rafelle Marie Timog Allego
10 feb 2018
0
0
658
fecha:
2 ene 1940 año
Ahora mismo
~ 84 years ago
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