Elisha Graves Otis (1811-1861), demonstrating his patent safety lift at the 1854 New York World's Fair. Above the elevator, a man cut the elevator's only supporting rope with an ax, but the elevator did not fall more than a few inches, because of Otis invention, an elevator brake.
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Creative#:
TOP07371429
Source:
達志影像
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RM
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須由TPG 完整授權
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