. "UAC Aircraft Systems" . . . . . . . . . . . . . . "United Aircraft" . . . . . "1934" . . "United Aircraft Corporation" . . . . . . "1934-09-26" . . "Renamed to United Technologies effective May 1, 1975" . . . . . . "United Aircraft" . . . "United Aircraft Manufacturing Company" . . . . . . . . "UAC" .