Who invented the Ballpoint pen? - Who thought of it?
The Inventor Behind the Modern Ballpoint Pen - National Pen
Mightier than the sword – Eve Parnell on László Bíró's ballpoint revolution – The Irish Times
Who Invented the Ballpoint Pen?: A Brief History (2023) – Dayspring Pens
Ballpoint Pens and The People Behind Them – ENG 101
Guru Nanak Institution on Twitter: "Ballpoint Pen Day - 10th June. Brothers Laszlo and Gyorgy Biro invented the #ballpointpen and obtained a patent in June of 1943. #BrothersLaszlo #GyorgyBiro #Ballpoint #FountainPen #Sketch #Pen #Ink #Drawing ...
WCSA - Old Events – June 10, 2018 - Laszlo Biro filed for a British patent (No. 564172) on a practical ball point pen with quick-drying ink in 1943 - WCSA.WORLD
Ballpoint Pens and The People Behind Them – ENG 101
Who was Ladislao José Biro, how did he invent the ballpoin… | Flickr
5 Great Ballpoint Pens for National Ballpoint Pen Day 2020 - Goldspot Pens