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100 Famous Inventors and Their Best Invention Ideas
to a cauldron that provided the steam. As the steam moved up the tube and entered the sphere, the heat made the sphere move in a rotary motion. The sphere also had one (or more) small hollow tubes for
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Top 101 Black Inventors & African American's Best Invention Ideas that Changed The World
hair-waving machine, revolutionizing the hair care industry. The machine used a combination of chemicals and heat to curl hair, replacing the traditional curling iron and reducing the time and effort required to