when was the post it note first sold
Post-it note 3M launched the product as "Press 'n Peel" in stores in four cities in 1977, but results were disappointing.[7][8] A year later 3M instead issued free samples directly to consumers in Boise, Idaho, with 94 percent of those who tried them indicating they would buy the product.[7] The product was sold as "Post-Its" in 1979 when the rollout introduction began,[9] and was sold across the United States [9] from April 6, 1980.[10] The following year they were launched in Canada and Europe.[11]