Tipp-Ex errors" (German: "Tippfehler"). He subsequently founded a company of the same name. Shortly after that a "Tipp-Ex Sales & Distribution" company (Tipp-Ex Vertrieb GmbH & Co. KG) was founded in Frankfurt by Otto Carls. This company still exists under the name of Tipp-Ex GmbH & Co. KG close to Frankfurt. "Tipp-Ex" became a registered trademark with the German patent office in 1987. Earlier, in 1951, Bette Nesmith Graham invented the first correction fluid in her kitchen and began marketing the product in 1956 as "Mistake Out", later called Liquid Paper. Tipp-Ex GmbH only started to produce white correction fluid in
Michael Nesmith the famous press advertisement asking for "four insane boys" so he applied for the job. Nesmith won his role largely by appearing blasé when he auditioned. He rode his motorcycle to the audition, and wore a wool hat to keep his hair out of his eyes; producers Bob Rafelson and Bert Schneider remembered "Wool Hat", and called Nesmith back. Once he was cast, Screen Gems bought his songs so they could be used in the show. Many of the songs Nesmith wrote for The Monkees, such as "The Girl I Knew Somewhere", "Mary, Mary" and "Listen to the Band", became