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PPT-Alexus Graves, Blue 3, Foundation Of Technology

PPT-Alexus Graves, Blue 3, Foundation Of Technology

Author : karlyn-bohler | Published Date : 2017-08-03

Escalators Escalator history Jesse Reno created around 1859 More like today perfected by Charles Seeberger around 1897 httpwwwideafindercomhistoryinventionsescalatorhtm

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Alexus Graves, Blue 3, Foundation Of Technology: Transcript

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