Aleksej Aleksandrovich Petrovskiy (69 years)

Born 1873-02-14 , Lukoyanov (RU)
Died 1942-05-24 , Yekaterinburg (RU)
Children:
Aleksei A. Petrovskiy. Pionier radiotechniki.

The first professor of radio engineering in Russia, author of over 200 scientific papers in the field of radio.