[Answer] Secretary Bette Graham invented Mistake Out, better known as what?

Step 1 : Introduction to the question "Secretary Bette Graham invented Mistake Out, better known as what?"

...Bette Graham was working for a banker in Texas in the late 1950s when she came up with an idea to help secretaries everywhere: a liquid paste to correct errors in typed papers. Graham experimented with various ingredients in her kitchen blender until she came up with a white liquid that dried smooth enough to type over again. She named it Mistake Out but later changed it to its current brand name, Liquid Paper. She opened an automated plant in 1968 and eventually sold her company for millions.

Step 2 : Answer to the question "Secretary Bette Graham invented Mistake Out, better known as what?"

Liquid Paper:

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