L Szl B R
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L Szl B R

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Description

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. L szl J zsef B r was the inventor of the modern ballpoint pen. B r was born in Budapest, Hungary in 1899. He presented the first production of the ball pen at the Budapest International Fair in 1931. While working as a journalist in Hungary, he noticed that the ink used in newspaper printing dried quickly, leaving the paper dry and smudge-free. He tried using the same ink in a fountain pen but found that it would not flow into the tip, as it was too viscous. Working with his brother Georg, a chemist, he developed a new tip consisting of a ball that was free to turn in a socket, and as it turned it would pick up ink from a cartridge and then roll to deposit it on the paper. B r patented the invention in Paris in 1938. In 1943 the brothers moved to Argentina and on 10 June filed another patent, and formed Biro Pens of Argentina
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Product details

  • Paperback | 116 pages
  • 152 x 229 x 7mm | 181g
  • United States
  • English
  • Aufl.
  • 6138299361
  • 9786138299363