'One of the first of these was based on an inclined conveyor belt & used in a NYC elevated train station in 1900'
an escalator
INVENTORS & INVENTIONS: One of the first of these was based on an inclined conveyor belt & used in a NYC elevated train station in 1900
One of the first of these was based on an inclined conveyor belt & used in a NYC elevated train station in 1900
One of the first of these was based on an inclined conveyor belt & used in a NYC elevated train station in 1900
INVENTORS & INVENTIONS
an escalator
INVENTORS & INVENTIONS