Igor Sikorsky

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Noun1.Igor Sikorsky - United States industrialist (born in Russia) who designed the first four-engine airplane and the first mass-produced helicopter (1889-1972)Igor Sikorsky - United States industrialist (born in Russia) who designed the first four-engine airplane and the first mass-produced helicopter (1889-1972)
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The Russian-born American aeronautical engineer Igor Ivan Sikorsky (1889-1972) had been working with helicopters for thirty years and finally in 1939 produced a satisfactory model.