Oozeer Rowena C.
Opeka Joze
Opekun, Jr. Antone R.
Opel Helmut
Ophir Jonathan
Oppenheimer Luis
Opti-Patents-, Forschungs-und Fabrikations-AG
Optiscan, Inc.
Optosonics, Inc.
Optovent AB
Orahood Richard C.
Orandi Ahmad
Ord, Jr. James A.
Oretorp Nils
Oridoroga Valentin A.
Orihashi Yasushi
Orkin Frederic L.
Orkin Fredric I.
Orkin Fredric I.
Orlosky Mark E.