• G10: Ballpoint Pen
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  • People went to Gimbels
    Gmbels had placed a full-page advertisement in the New York times for a wonderful new invention, the ballpoint pen
  • Why were early ballpoint pens not produced commercially?
    The main problem was with the ink. If it was too thin the ink leaked out of the pen. If it was too thick, it didn't come out of the pen at all.
  • Why was Ladislas Biro's pen better than earlier models?
    With the help of his brother who was a chemist, he produced a ballpoint pen that didn't leak when the pen wasn't being used.
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