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
Bruce Nesmith Team was later expanded to also include Margaret Weis, Douglas Niles, Bruce Nesmith, Mike Breault, Roger Moore, Laura Hickman, Linda Bakk, Michael Dobson and Garry Spiegle. Nesmith designed "" (1990), which extended the ideas behind the Hickmans' original "Ravenloft" adventure and sought to make "AD&D" competitive with games like "Call of Cthulhu" and "Chill". Nesmith and Andria Hayday designed the "DragonStrike" board game, which was published by TSR, Inc. His other design work for "D&D" includes "The War Rafts of Kron" (1984), "Sabre River" (1984), "Dragons of Desolation" (1984), "Master Player Screen Featuring The Spindle" (1985), "The Book of Lairs