Ball Point Pen Day
Ball Point Pen Day is held on June 10. In June of 1943 the Bíró brothers, László and György, became owners of US Patent 2,390,636 – better known around the world as the ball point pen. This event in the first decade of the month June is annual. 
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A ballpoint pen is a pen that distributes ink along a writing surface, and it has a very small ball in the writing tip that moves in the process.
‘Ballpoint pens’ are also known as ‘biros’, ‘ball pens’ and ‘Biromes’.
The main design of a ballpoint pen originated from an 1888 patent for a pen that could write on leather, by leather tanner John Loud, an American, but the design was unsuitable for writing on paper.
The first batch of ballpoint pens for sale was in New York. Ballpoint pens were introduced to America by Milton Reynolds, an American entrepreneur, who changed Bíró’s design in the mid 1940s, although it wasn’t until the 1950s that a more reliable pen was invented by Marcel Bich in France, that did not leak and had smooth ink flow, and was sold under the name ‘Bic’. Ballpoint pens were used in the World War II by the Air Force pilots.
Similar holidays and events, festivals and interesting facts
Donald Duck Day on June 9 (Donald first appeared to us in a 1934 film called The Wise Little Hen, a retelling of the original little red hen story);
World Ice Cream Day on June 10
Indomitable Passion Day on June 11
Red Rose Day on June 12
Loving Day on June 12 (is the biggest multiracial celebration in the United States. This is anniversary of the 1967 United States Supreme Court decision Loving v. Virginia which struck down all anti-miscegenation laws remaining in sixteen U.S. states.");
Superman Day on June 12 (Superman was first created in 1933 by Joe Shuster and Jerry Siegel, the writer and artist respectively);
Sewing Machine Day on June 13