In the late 1920s, Hungarian newspaper editor László Bíró (1899-1985) was frustrated about having to keep filling fountain pens. It took too much time. Together with his brother -who happened to be a chemist- he developed what is now known as a ballpoint pen.
It would use a special ink and a special ball in the pen to distribute the ink evenly. After only a few years this invention became a household item around the World. Today, the name Bíró is synonymous with ballpoint pen in many regions around the World.
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By Samsara at English Wikipedia [Public domain], via Wikimedia Commons