Wacky WorldInventions
3M scientist Spencer Silver created a low-tack reusable adhesive in 1968. Years later colleague Art Fry used it for bookmarks in his hymn book, and Post-it Notes launched in 1980.
Wacky WorldInventions
3M scientist Spencer Silver created a low-tack reusable adhesive in 1968. Years later colleague Art Fry used it for bookmarks in his hymn book, and Post-it Notes launched in 1980.