Tag: electric elevator

This Day, That Year – February 20

John Drummond received a patent for candle moulds on this day in 1846. Did you know that: • Cyrus Baldwin patented the hydraulic electric elevator on this day in 1872• Luther Crowell patented a machine that manufactured the square-bottom paper grocery bags on this day in 1872• Silas Noble and J.P. Cooley patented a toothpick […]

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