Eudicot is actually same as dicot-and it is not the same. It is quite new name for  modern dicots. The plants that are not eudicots could be called paleodicots referring to their more primitive origin.
Invented by : Elisha Graves Otis. Invented in year : 1852. Elevator is a lifting device consisting of a platform or cage that is raised and lowered mechanically in a vertical shaft in order to move people or cargo from one floor to another in a building. They are also known as Lifts.
According to Gray, what Elisha Otis patented in 1861 (two years after Tufts) was basically a freight elevator typical of the eraâan open platform designed to haul goods up and down. What made it special was his patented safety device at the top. Without safeties, elevators were dangerous.