Bette Nesmith Graham
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Bette Nesmith Graham (23 March, 1924 - 12 May 1980) was a typist, commercial artist, and inventor who invented Liquid Paper.
She was born as Bette Graham in Dallas, Texas. She was the mother of musician and producer Michael Nesmith.
She started marketing her typewriter mistake correction fluid as "Mistake Out" in 1956.
In 1979 she sold "Liquid Paper" to the Gillette Corporation for 47.5 millon United States dollars.