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Bought patent for $400 and made millions

Fact - Walter Hunt invented and patented the safety pin in 1849. He sold the patent to W. R. Grace and Company for $400. Over the years, the company made millions from the invention.
Pic Credits: © 2008 Damian Gadal | Pin Up | CC BY-SA | Modified

Walter Hunt invented and patented the safety pin in 1849. He sold the patent to W. R. Grace and Company for $400. Over the years, the company made millions from the invention.

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