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By Lowell Heddings on July 12th, 2011
Lowell Heddings, better known online as the How-To Geek, spends all his free time bringing you fresh geekery on a daily basis. You can follow him on Google+ if you'd like.
Pen knives, diminutive pocket knives with small sharp blades, derive their name from their original purpose: to slice through quill tips and turn them into writing pens.
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