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April 1, 2024
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Elevator Brake
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Обновлено 14 фев 2018
Elisha Graves Otis
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Created by
Jerome Johnson
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События
Elevator brake Invented
First Sky Scrapper
Gear-Less Traction System
New General Elevator Design
Demonstrated safety brake
57 elevators installed
Leading Manufactures
New event
Периоды
New time period
Elevator Brake
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2024
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