General Knowledge
Medium
Question
The ball point pen was invited by___________?
A
Chester Carlson
B
Petrache Poenaru
C
Johannes Gutenberg
D
Laszlo Biro
✓ Official correct answer
Community credibility
Registered members can vote for the answer they believe is correct today and explain why. If the facts change after an election or news event, suggest a new option so others can vote it up.
A
Chester Carlson
No member explanations yet for this option.
B
Petrache Poenaru
No member explanations yet for this option.
C
Johannes Gutenberg
No member explanations yet for this option.
D
Laszlo Biro
No member explanations yet for this option.