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Leonardo da Vinci’s sketches from the late fifteenth century were the ancestor to the modern day flying machine
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The very first piloted helicopter was invented by Paul Cornu in 1907, however, this design was not successful.
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On September 14, 1939, the VS-300, the world’s first practical helicopter, took flight at Stratford, Connecticut.
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American inventor Stanley Hiller, Jr. made the first helicopter with all metal rotor blades that were very stiff
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Creation of the drones
