László Biró He was the inventor of the ballpoint pen, he was born in Budapest on September 29 th. - ppt download
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LASZLO BIRO-INVENTOR OF THE BALLPOINT PEN
Learn About Who Invented the Ubiquitous Ballpoint Pen
Who Invented Ballpoint Pen in Urdu / Hindi | Ballpoint Pen History | Laszlo Biro - YouTube
The Story of László Bíró, the Man Who Invented the Ballpoint Pen | Smart News| Smithsonian Magazine
Why was the ballpoint pen invented? - Quora
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László Bíró - Wikipedia
June 10, 1943: The Ballpoint Pen — Ink Dry for Me, Argentina | WIRED
History of Ballpoint Pens – Who Invented Ballpoint Pen?
The Story of László Bíró, the Man Who Invented the Modern Ballpoint Pen ~ Vintage Everyday
The Story of László Bíró, the Man Who Invented the Modern Ballpoint Pen ~ Vintage Everyday
A History of the Ballpoint Pen - Owlcation
The Biro, the invention that changed the writing game
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History of Ballpoint Pens – Who Invented Ballpoint Pen?
