There are several theories behind the origin of the product's name. One theory refers to Mark Pringle, who filed a US Patent 2,286,644 titled "Method and Apparatus for Processing Potatoes" on March 5, 1937.[11] Pringle's work was cited by P&G in filing their own patent for improving the taste of dehydrated processed potatoes.[2] Another theory suggests that two Procter advertising employees lived on Pringle Drive in Finneytown (north of Cincinnati, Ohio), and the name paired well with "potato chips".[5][12] Another theory says that P&G chose the Pringles name from a Cincinnati telephone book.[13] Another source says that the name Pringles was "chosen out of a hat" to promote a family name appeal.[14]