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100 Famous Inventors and Their Best Invention Ideas
went Gould’s way. He obtained several patents starting in 1977 and earned millions from royalties. 84. Gertrude B. Elion In 1944, Gertrude Elion joined the Burroughs Welcome Laboratories and met with George
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Top 101 Black Inventors & African American's Best Invention Ideas that Changed The World
contribution was recognized when he was awarded a U.S. patent for his revolutionary invention in 1879. 84. Willis Johnson (1947 – present) – Rotary egg beater When Willis Johnson invented his mixing apparatus
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new products
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