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What invention to society is elisha graves otis known for?

April 26, 2017elisha graves invention known OTIs Society

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What invention to society is elisha graves otis known for?

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Elisha Graves Otis developed an automatic safety device for stopping an elevator if the supporting cables broke. In 1857 he manufactured the first passenger elevators used in the U.S. This advancement in elevating devices was needed to make multi-story skyscrapers practical.