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BBC News | UK | Sticking around - the Post-it note is 20
Spencer Silver, an Inventor of Post-it Notes, Is Dead at 80 - The New York Times
The Accidental Billion Dollar Invention of 3M Post It Notes | Invention by Spencer Silver & Art Fry - YouTube
The Post-it : An accidental invention that stuck - DesignWanted : DesignWanted
Spencer Silver and Arthur Fry – In Search Of An Application - Features - The Chemical Engineer
Post-it Notes | MNopedia
Muere a los 80 años Spencer Silver, uno de los inventores del Post-it
An Idea That Stuck: How A Hymnal Bookmark Helped Inspire The Post-It Note : NPR
Post-it Note - Wikipedia
Spencer F. Silver, inventor of sticky note adhesive, dies at 80
Spencer Silver, who helped invent the Post-it Note, dies at age 80 | US news | The Guardian
Story of Post It Notes!. Dr. Spencer Silver was a scientist at… | by Mohd Shafiuddin Shaikh | Medium
Inventors HOF on Twitter: "#OTD Inductee & former senior scientist for @3M, Spencer Silver was granted a patent for the microspheres adhesive used on Post-it® Notes! https://t.co/pGPhKnEgZ5" / Twitter
Spencer Silver, an Inventor of Post-it Notes, Is Dead at 80 - The New York Times
Interview] Spencer Silver, the developer of 'Post-it', dies - GIGAZINE