On January 17, 1899, U.S. Patent No. 617,778. issued to Charles D. Seeberger on anĀ escalator. SeebergerĀ did not actually invent “the” escalator, as there were several earlier patents, including to Souder U.S. Patent No. 406,314 in 1889 (which was never … Continue reading January 17 Patent of the Day
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