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Showing 1 - 3 of 3
Space Pens
The history of the Fisher Space Pen
Rating: 
Hits: 252
How Ballpoint Pens Work
A brief description of how Ballpoint Pens work. This site is part of Marshall Brain's HowStuffWorks.com.
Rating: 
Hits: 302
The Truth About the NASA Space Pen
The Truth About the NASA Space Pen
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Hits: 302
Showing 1 - 3 of 3