Complex sentence: In 1940 the Bíró brothers and a friend, Juan Jorge Meyne, moved to Argentina fleeing Nazi Germany and on June 10, filed another patent, and formed "Bíró Pens of Argentina".
Split into simpler sentences: In 1940 the Bíró brothers and a friend, Juan Jorge Meyne, moved to Argentina fleeing Nazi Germany. On June 10 they filed another patent, and formed "Bíró Pens of Argentina".