The invention of the pen

In 1938, the hungarian inventor, Lazlo Biro, invented the pen. He used the pen that had a small ball with a viscuis and oily red. He went to Argentina in 1940, escaping from the nazis. He patented his invention the 10 of June of 1943 and inmediately people started to use it in Buenos Aires.

He had this fantastic idea while he was looking some boys that were playing in the street with small balls.