Crossword clues for Safety elevator inventor 4 lettersAnswerClueOTISSafety elevator inventorOTISElevator safety brake inventorOTISInventor of elevators' safety brakes.OTISElevator safety-device inventor.OTISInventor of the safety elevatorOTISInventor of safety device for elevators.OTISInventor of automatic safety device for elevators, 1854.
