History of the Ballpoint Pen
Did the Biro brothers invented the ballpoint pen in 1936 1938 or 1939?
Ballpoint pen was invented by László Bíró on August 25, 1908
British Cabinet 1935 - The invention of the ballpoint pen
Who was Ladislao José Biro, how did he invent the ballpoint pen and how did it help in World War II?
Invention of The Ballpoint Pen - MOST Interesting Facts
Ladislao José Biro 117 birthday inventer of the ballpoint pen
who invented ball point pen | #ballpointpendrawing #LaszloBiro
A Hungarian named Ladislo Biro invented the first ballpoint pen in 1938.
Who invented the BALLPOINT PEN?
The Revolutionary Vintage Ballpoint Pens
Ladislao José Biro - Inventor of Ballpoint Pen
History of Pen | Who invented Ballpoint Pen | Evolution of Pen
"Laszlo Biro: An Inventor Who Changed the History of Writing"
What year was the ballpoint pen invented? - Fun Facts #Shorts
The modern ballpoint pen was invented by Laszlo Biro, a Hungarian journalist, in 1938
Inventions-Ballpen
