In 1917, the US Patent Office awarded Clarence Saunders a patent for a "self-serving store." Saunders invited his customers to collect the goods they wanted to buy from the store and present them to a cashier, rather than having the store employee consult a list presented by the customer, and collect the goods. Saunders licensed the business method to independent grocery stores; these operated under the name "Piggly Wiggly.