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101 Inventions That Changed the World in the Last 100 Years
by, once again, Toshiba. It was a sophisticated and rather messy pile of circuit boards nicknamed Fire Tower; the second prototype was much tidier called Vanguard. Regardless of its neatness, the prototype
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Top 101 Black Inventors & African American's Best Invention Ideas that Changed The World
professional in the aerospace and safety industries, he also invented an alarm system in 1999; it was not just any other alarm system for home uses but a NASA-approved one. RELATED: How Cad Crowd Helps
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Top 100 Famous Female Inventors in History & Modern Women Inventors
before Anna Connelly developed an external metal staircase in 1887, which was considered the first-ever fire escape in the world. Aside from helping save human lives, Connelly’s invention also inspired one of