7 Up is an American brand of lemon-lime-flavored non-caffeinated soft drink. It was created by Charles Leiper Grigg, who launched his St. Louis–based company The Howdy Corporation in 1920. Grigg came up with the formula for a lemon-lime soft drink in 1929. The product, originally named "Bib-Label Lithiated Lemon-Lime Soda", was launched two weeks before the Wall Street Crash of 1929.

Source: Wikipedia