Bette Nesmith Graham. Correction liquid

In 1951 a young single mother Bette Nesmith got a job as a secretary at Texas Bank. At work they used typewriters with carbon tapes and it was impossible to erase mistakes, that is why the entire page had to be retyped. Watching painters’ work Bette once realized that misprints could be painted over, for example, with white tempera. For 5 years she experimented with painting liquid formula, helped by her son’s chemistry teacher. Bette’s coworkers frequently borrowed her miraculous corrector. She realized potential profitability and in 1956 set up the production of “Mistake Out”. Later the invention was patented and renamed as “Liquid Paper”. In 1979 Bette Nesmith sold the plant “Liquid Paper” to “Gillette” for $ 47,5 million.