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The Stuff of Genius - The Safety Pin

With patents on everything from fountain pens to rifles, Walter Hunt has sometimes been called "America's forgotten inventor." However, his most successful invention is incredibly commonplace -- tune in and learn more about the safety pin. http://howstuffworks.com http://www.facebook.com/StuffofGenius http://itunes.apple.com/us/podcast/the-stuff-of-genius/
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