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This African-American inventor and businessperson was born on May 18, 1838. They are best known for being awarded a patent for automatically opening and closing elevator doors. …

This African-American inventor and businessperson was born on May 18, 1838. They are best known for being awarded a patent for automatically opening and closing elevator doors. …
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This African-American inventor and businessperson was born on May 18, 1838. They are best known for being awarded a patent for automatically opening and closing elevator doors. This patent was awarded on October 11, 1887.

User Mehedi Hasan Shagor
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Elisha Graves Otis is the inventer of elevator.

User IceCreamToucan
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