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Inventor Spencer Silver, Who Discovered Adhesive Used to Make Post-it Notes, Dies at 80 People 5/14/2021 © Provided by People 3M Spencer Silver Spencer Silver, the man who invented the Post-it Note adhesive, has died, according to his former company. He was 80. 3M, the company that produces Post-it Notes, confirmed Silver s death in an announcement on Wednesday, revealing that he died on May 8 at his home in St. Paul, Minnesota. His wife Linda told The New York Times that Silver had suffered an episode of ventricular tachycardia, which is a heart rhythm disorder. She also said he underwent a heart transplant 27 years ago.

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