Who invented the ballpoint pen? How many years?

Who invented the ballpoint pen? Before the invention of ballpoint pen, writing was a very risky thing. To write with a fountain pen, you must always immerse the pen in an ink bottle and fill it with water, and you must also endure the trouble of frequent water leakage. Finally, black ink (invented by China) dries slowly on paper. These problems were first solved by a cobbler named John Lauder on 18881October 30th. Later, he registered a patent for this invention. He invented a pen with a rotating ball at the tip, which can constantly take ink from the ink bag. Although this pen still leaks, writing on leather is much better than fountain pen. Lauder didn't make full use of his patent. If he used it, we should be talking about "Lauder" ballpoint pen today instead of "Biro" ballpoint pen. Hungarian laszlo Biro (1899- 1985) studied medicine at first, but did not graduate. Before working in journalism, he worked as a hypnotist and a racing driver. Curious about the difference in drying time between news ink and fountain pen ink, Biro and his brother George, who is engaged in chemistry, tried to install a small ball on the pen. The pen draws ink to the tip of the pen with the rotation of the ball. Since then, Biro ballpoint pen was born. The two brothers applied for the patent of this ballpoint pen in 1938. 1940 emigrated to Argentina to escape Nazi persecution, and 1943 applied for the patent again there. One of the early users of this pen was the Royal Air Force, because they found it had good writing performance at high altitude. The use of the Royal Air Force makes the name Biro synonymous with ballpoint pens in Britain.