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20 h 2 m, 14 set 1939 ano - World’s 1st practical helicopter, the VS-300 designed by Igor Sikorsky
Adicionado na linha do tempo:
Timeline of 1939
By
Abraham Grahqm
31 ago 2017
0
0
630
Data:
20 h 2 m, 14 set 1939 ano
Agora
~ 84 years ago
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