Ballpoint pen (ballpoint pen:), is the pen whose distal end is a small metal ball with a diameter of about 1 mm swivel ball and socket edge prevents loose ball. The water flows through a narrow pipe, this ink ballpoint part that rotates on a phiokradat. The ridge that is located in the socket of metal will pay to ink ballpoint ink lines to most ballpoint pens to write about 2.5-3.5 kilometers in 1930, La, Slovak painter and journalist Roberto b nationals of Hungary have invented the ballpoint pen invention, the World War II refugee to b Rosenberg, Argentina established a pen that he shared with his brother created and sold as artifacts in the years 1944 and then gained popularity because of the portability and is water ink, it does not fade out.
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