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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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27 jun 1931 ano - First patent for helicopter

Adicionado na linha do tempo:

Brave New World

ByWaverly Moller
15 nov 2018
0
0
440

Data:

27 jun 1931 ano
Agora
~ 94 years ago
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