Technology Behind the Invention
What did the Allgood Trio devise? Retractable stairs! These steps resemble ordinary stone steps, preserving the building's exterior appearance. However, pushing the button triggers a fantastic transformation: the steps convert into a means for the woman in the wheelchair to enter. All she has to do is press a button! These steps are known as the Allgood Trio Sesame steps. Watch the video below to see this amazing invention in action.
