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Alexander Nikolaievich Prokofiev de
Seversky (Russian: Алекса́ндр Никола́евич Проко́фьев-Се́верский) (June 7, 1894 (N.S.) –
August 24, 1974) was a Russian-American...
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invented the
practical Helicopter),
Vladimir Yourkevitch, and
Alexander Procofieff de Seversky.
Sergei Rachmaninoff and Igor
Stravinsky are by many considered...
- New York:
Orion Books, 1987. ISBN 0-517-56588-9 de Seversky,
Alexander Procofieff.
Victory through Air Power. New York:
Simon & Schuster, 1942. ASIN B0007DP2B2...
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inventors Vladimir Ipatieff Alexander M.
Poniatoff Ilya
Prigogine Alexander Procofieff de
Seversky Igor
Sikorsky Otto
Struve Vladimir Zvorykin Vladimir Yourkevitch...
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including Po-2 ****uruznik (world's most
produced biplane)
Alexander Procofieff de Seversky,
inventor of
ionocraft and
gyroscopically stabilized bombsight...
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Robert Taylor Pritchett (1828–1907), UK –
Pritchett bullet Alexander Procofieff de
Seversky (1894–1974), Russia/U.S. –
first gyroscopically stabilized...
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designer of
Sukhoi aircraft,
including Su-47, Su-57 and SSJ 100
Alexander Procofieff de Seversky,
inventor of
ionocraft and
gyroscopically stabilized bombsight...
- or tankette, and the
first continuous track amphibious ATV)
Alexander Procofieff de
Seversky (1894–1974) Russian
Empire United
States ionocraft, first...
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including Po-2 ****uruznik (world's most
produced biplane)
Alexander Procofieff de Seversky,
inventor of
ionocraft and
gyroscopically stabilized bombsight...
-
Louis Rukeyser,
economic columnist, from 1976 to 1986
Major Alexander Procofieff de Seversky,
syndicated in 85
newspapers a w****ly
feature by Al Smith...
