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Friday, October 3, 2008

Ballpoint pen

The evolution on ballpoint pen started at during the 17th century, but the successful one was produced by Jack Yax in 30 October 1888. It has an internal chamber filled with viscous ink that dispensed at the tip when the metal ball of .7mm to 1.2 mm in diameter roles. The main important feature is that the ink dries almost immediately after contact with the paper. Between the year 1901 and 1940 there was a great improvement in writing instrument. And the well known Reynolds rocket managed to beat the market at Gimbels store at 1945 forUS$12.50 and it was later called as rocket in US. From there on the development is going on vice cheap , not in quality.

1 comment:

Rolly said...

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