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: Invention
पहले सुरक्षा एलीवेटर का आविष्कार किसने किया? , Who invented the first safety elevator?
Who invented the first safety elevator?
A.
Bill Gates
बिल गेट्स
B.
Elisha Otis
इलिशा ओटिस
C.
Paul Allen
पॉल एलन
D.
dave hyatt
डेव हयात
Solution
B. Elisha Otis
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