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The inventor of the pen was John Loud, an American leather tanner who, in 1888, put a ball in a tube of ink to mark lines on leather. Loud never patented or commercialized the invention, so the true inventor of the pen is the Hungarian Ladislao José Biro -
In 1938, the Hungarian inventor, Lazlo Biro, succeeded in using the ballpoint pen with a viscous and oily quick-drying ink that was suitable. Established in Argentina in 1940, fleeing from the Nazi threat, he patented his invention on June 10, 1943. It immediately began to be used in Buenos Aires. -
another example is the bic pen but that has not changed it has been the same since 1955 and today nothing has changed -
now they take the pens with drawings or with dolls like the examples in the photo, or in a single pen many inks