O'Brien Philip T.
O'Connor Daniel
O'Connor Daniel J.
O'Halloran John T.
O'Hara Mark F.
Oberbeck Donald E.
Odor H. A.
Offutt Worthington W.
Ogilvie Michael B.
Oglesby Alfred P.
Oglesby Alfred Peter
Oglesby Elizabeth A.
Oglesby John P.
Oglesby John Paul
Oglesby Lloyd S.
Oglesby & Butler Research & Development Ltd.
Oglesby & Butler Research and Development Limited
Oglesby & Butler Technology Limited
Ohashi Kiyoshi
Onno Thomas