Question

who discover pen and when?

Answer 1

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

Answer 2

Laszlo Biro has discovered the pen in 1938.