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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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20 h 2 m, 14 sept 1939 año - World’s 1st practical helicopter, the VS-300 designed by Igor Sikorsky
Añadido al timeline:
Timeline of 1939
By
Abraham Grahqm
31 ago 2017
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809
fecha:
20 h 2 m, 14 sept 1939 año
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~ 86 years ago
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