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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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13 mayo 1940 año - First untethered Helicoptered flight
Descripción:
Igor Sikorsky successfully tests an untethered helicopter
Añadido al timeline:
Flight Timeline
By
William Ferris
30 nov 2018
0
0
308
fecha:
13 mayo 1940 año
Ahora mismo
~ 85 years ago
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