1860
Ottó Bláthy, Hungarian engineer and chess player (died 1939)
Ottó Bláthy, Hungarian engineer and chess player (died 1939)
Ottó Bláthy, Hungarian engineer and chess player (died 1939)
Hungarian electrical engineer (1860-1939)
Ottó Bláthy, Hungarian engineer and chess player (died 1939)
Ottó Bláthy, Hungarian engineer and chess player (died 1939)