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one of the first helicopters
https://en.wikipedia.org/wiki/Ján_Bahýľ
modern parachute
https://en.wikipedia.org/wiki/Štefan_Banič
electric guitar
https://en.wikipedia.org/wiki/John_Dopyera
invention of pen
https://en.wikipedia.org/wiki/Slavoljub_Eduard_Penkala
invention of radio
https://en.wikipedia.org/wiki/Jozef_Murgaš
yellow cab invention
https://en.wikipedia.org/wiki/John_D._Hertz
modern photography and cinematography
https://en.wikipedia.org/wiki/Joseph_Petzval
invention of GPS
https://en.wikipedia.org/wiki/Ivan_A._Getting
ghost busters and other hollywood movies
https://en.wikipedia.org/wiki/Ivan_Reitman
Slovak Aurel Stodola was a professor of mechanical engineering at the Swiss Polytechnical Institute in Zurich. One of his students was Albert Einstein
https://en.wikipedia.org/wiki/Aurel_Stodola
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