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Alexander Miles (1838-1918) invented the automatic elevator door. The invention was patented on October 11, 1887. Before his invention, using an elevator could be very dangerous because closing the doors was a manual process. Those who forgot to close the doors often risked falling down the elevator shaft, which could result in serious injury or even death. When his daughter was injured after falling into an elevator shaft, Miles was determined to create a solution. He created a mechanism that automatically opens and closes the elevator shaft doors, transforming elevators into what we now use today.
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