"A.O. Smith Corp." . . . . . . . . "A.O. Smith Corporation" . "A. O. Smith" . . . . . . "3.06E9" . . "A. O. Smith Corporation of America" . . . . "4.72E8" . . . "A.O. Smith" . . . "3.7E8" . . "2.99E9" . "A. O. Smith#History" . . . "A. O. Smith Automatic Frame Plant" . "State Water Heaters" . . . "1904" . "A. O. Smith" . . "A. O. Smith Corporation" . . . . . "1.67E9" . . "15100" . "24" . .