Konstantin Khrenov was born 13 February 1894 and educated at Saint Petersburg State Electrotechnical University and became an Engineer and professor.
Konstantin Konstantinovich Khrenov (Russian:   ; 13 February 1894  12 October 1984) was a Soviet engineer and inventor who in 1932 introduced underwater welding and cutting of metals. In 1918, he graduated from the department of electrochemistry of Saint Petersburg State Electrotechnical University (ETU). Engineer, professor 
