Question

who invented pen
and who invented ball oen​

Answer 1

Explanation'-

László Bíró

László Bíró first sold the ballpoint pen in 1938, just before the onset of WWII. The pen may be mightier than the sword, but when Jewish-Hungarian journalist László Bíró invented the ballpoint pen in the 1930s clichéd sayings were probably the last thing on his mind.

Answer 2

Answer:

Petrache Poenaru invented pen

and John J Loud invented ball pen...