Posted on June 10th, 2011
In 1888, John Loud, an American leather tanner, filed a patent for a roller-ball-tip marking pen. However, his pen was never manufactured, and neither were any of the other 350 ball-type pens patented by others over the next thirty years. It wasn’t until 1935 that Hungarian brothers Ladislas and Georg Biro introduced an improved version of the ballpoint pen to the world. They first patented the pen in 1938 and applied for a new patent in Argentina on June 10, 1943, hence the celebration of Ballpoint Pen Day every year on this date!