Aleksander Siewierski, originally from Georgia, was in the United States
in 1917 and was there when the revolution in Russia broke out. As
Alexander Seversky, he founded the Seversky Aero Corporation. Alexander
Kartvelli (also a Georgian) became his main designer. Unfortunately,
financial problems led to firing Seversky, and his company changed its
name to Republic Aviation Corporation. The projects started and
developed by Seversky, which resulted in the P-35 fighter, were
continued, though.
As a result of its further development, a design for the XP-41
high-altitude fighter equipped with a turbocharger was prepared. Only a
prototype was built, while many of its solutions went to a more advanced
aircraft, designated AP-4, and finally P-43.