Katya Harfmann of Butlerville, Ohio
the Tipper Toes when she was in 4th grade. The Tipper Toes could
be screwed to the chair legs to prevent them from tipping over.
made a model of her invention, entered it in the Invent Amercia!
and became the winner for the state of Ohio.
Source of information: Girls & Young Women Inventing:
Twenty True Stories About Inventors Plus How You Can Be One Yourself by Frances A. Karnes
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