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Spencer Silver, a scientist at 3M, accidentally created a low-tack adhesive in 1968 while trying to develop a strong adhesive. It took several years before his colleague, Art Fry, realized the adhesive's potential for creating reusable bookmarks. Together, they launched the product now known as Post-it Notes in 1980.

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βˆ™ 5mo ago
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Q: How did Spencer silver invent post-it notes?
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