Nikolai
            Nikolayevich Polikarpov was, with Tupolev, the most famous
            Russian aircraft designer prior to World War II.  Polikarpov
            worked with Igor Sikorsky prior to 1917 and was the chief designer
            of State Aircraft Factory Number One prior to the establishment of
            design bureaus.
            Polikarpov was famous for light aircraft like the
            U-2 (renamed the Po-2 in his honor) utility biplane and biplane
            fighter aircraft.  The Polikarpov monoplane fighter I-16 was
            possibly the best fighter in the world when it went into production
            in 1934.
            Polikarpov's designs could not compete with those
            of Yakovlev, MiG and LaGG and his design bureau was closed at his
            death in 1944.
            Note: Following the Soviet method of
            designating aircraft, Polikarpov was a design bureau and not a
            manufacturer of aircraft.