The World Chrome: Eight-year-old Theresa Thompson and her 9-year-old sister Mary were the youngest sisters to receive a U.S. patent. They invented a solar tepee for a science fair project in 1960. They called the device a Wigwarm.

Saturday, 10 May 2014

Eight-year-old Theresa Thompson and her 9-year-old sister Mary were the youngest sisters to receive a U.S. patent. They invented a solar tepee for a science fair project in 1960. They called the device a Wigwarm.

1 comment:

Anonymous25 April 2017 at 11:53
What was the Patent Number?
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