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The ballpoint pen hasn't changed very much, the main change was the colors of ink.
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The ballpoint pen was first patented by John Loud on October, 30 1888.
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Laszlo, Biro's brother helped him with the making of the ballpoint pen.
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One reason the ballpoint pen was invented was that during the world war, pilots used ink filled pens to note details of the enemy.
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The ballpoint pen was invented in Budapest, Hungary.
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Laszlo, Biro adcpted the nickname of Doctor Ink
