Opderbecke Thomas
Optek Limited
Orabone William Edward Jr.
Oraltechnic Anstalt
Orbital Robotics Ltd.
Ordeig Miguel Angel
Ordinartsev Igor A.
Orimo Takao
Orkiszewski Jerzy
Orlamuender Frank
Ornig Hermann
Orr Malcom W. (jr.)
Orr Willis P.
Orrville Products
Orrville Products Inc.
Orsillo James
Orth Christoph
Ortiz Casar Santos
Ortlieb Robert M.
Ortman Ginger