Question

who has invited the pen and why

Answer 1

László Bíró

The first patent on a ballpoint pen was issued on October 30, 1888, to John J Loud.In 1938, László Bíró, a Hungarian newspaper editor, with the help of his brother George, a chemist, began to design new types of pens, including one with a tiny ball in its tip that was free to turn in a socket