M.A. Kupfer built helicopter/autogyro trainer towed off ground with rotor spun by tethered cable 1953.
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AERO-VOLGA (2)
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AEROPRAKT (2)
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AEROPROGRESS (1)
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ALBATROSS (1)
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AVANTAGE (4)
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AVIA (1)
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BERIEV (9)
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CHERNOV (3)
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DUBNA (2)
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ELITAR (4)
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GIDROPLAN (1)
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ILYUSHIN (3)
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INTERAVIA (1)
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IRKUT (1)
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KHRUNICHEV (5)
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KULON-2 (1)
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LAPLAN (4)
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MAI (5)
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MiG (2)
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MVEN (1)
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MYASISHCHEV (2)
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RAA (1)
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SGAU (1)
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SMOLENSK (5)
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SUKHOI (13)
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TUPOLEV (7)
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UNIKOMTRANSO (1)
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VITEK (1)
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YAKOVLEV (6)
