No.
a caveman droped a rock on his foot
yes he did invent a ballpoint pen.yesYes, he did invent the ballpoint pen.
He did not invent the escalator or the fountain pen. He first of all was to busy to invent stairs that move. Second he patented the fountain pen he did NOT invent it
Yes he did. He invented the fountain pen.
He did NOT invent the fountain pen he patented it. The first fountain pen was invented by a french-man named M.Bion. Lewis Waterman just improved it.
fountain pen
In 1875
yes!
the ballpoint pen
That's prehistory - some caveman scratching a plan in the dirt.
I will invent a pen which copies same writing s i can and also with a beautiful writing.