 Complete the following phrase:  Sergey Petrovich Izotov Russian: Сергей Петрович Изотов; 30 June 1917 - 6 May 1983 was a Soviet major scientist and designer of aircraft engines. Chief Designer and General Designer 1960-1983 of OKB-117. General Designer Leningrad NPO named after V. I. Klimov. Hero of Socialist Labor. Winner of Lenin Prize, Stalin Prize first degree and USSR State Prize. Honored Scientist and Technician of the RSFSR. Doctor of Technical Sciences 1968. Candidate for corresponding members of the USSR Academy of Sciences. Author of 30 scientific papers and 13 inventions. Freeman of the city of Rzeszow Poland. Delegate of the 