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August 1, 2025
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Timeline of Elevator
Category:
Иное
Обновлено:
22 сен 2017
Engineering Activity 1.9
0
0
537
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Created by
Emory Pollard
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События
Louis XV created the "flying chair"
Otis invented the elevator
Water pressure became a source of power for the elevator
The first electrical elevator was used
The gear less traction electric elevator was invented
Otis installs a signal control in the elevator
Microprocessors control all elevator operations
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