Just how the advertising funnel jobs The earliest version of a sales funnel that I have the ability to discover is this from 1904 by Frank Hutchinson Dukesmith, editor of the Salesmanship magazine Here, Dukesmith introduced the principle of 4 phases that result in a sale: Attention, Rate Of Interest, Need and also Conviction. Nearly 50 years later, an advertising and marketing and sales exec in the pharmaceutical sector, Arthur F Peterson, published the adhering to illustration in his book, Drug Marketing, Describing, and also Sales Training: