Question

who invented the first ball point pen ?? ​

Answer 1

László Bíró and John J. Loud invented the first ball point pen

Answer 2

Explanation:

László Bíró

László József Bíró, Hispanicized as Ladislao José Biro, was a Hungarian-Argentine inventor who patented the first commercially successful modern ballpoint pen. The first ballpoint pen had been invented roughly 50 years earlier by John J. Loud, but it did not attain commercial success.

John J. Loud

John Jacob Loud was an American inventor known for designing the first ballpoint pen. Trained as a lawyer at Harvard College, Loud worked at the Union National Bank in Weymouth, Massachusetts as a cashier.