Lots More Information
Related HowStuffWorks Articles
- How Magna Doodle Works
- How Electronic Ink Will Work
- How Patents Work
- How are Crayons and markers made?
More Great Links
- The Battle of the Ballpoint Pens
- Parker: Ball Point Pens - illustrated
- Invention Facts and Myths: Ballpoint Pen
- Additional notes on old ink
- Pendemonium - Vintage writing collectibles
