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Post-it Notes

In 1968, Spencer Silver, a chemist working for 3M, stumbled across a “low-tack” adhesive that he found was just strong enough to hold paper to a surface but weak enough that it wouldn’t tear upon removal. After many failed attempts at finding a marketable application, one of Silver’s colleagues, Art Fry, realized that it would be perfect as a no-slip bookmark, and the Post-it Note was born.

 

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