O'keefe John G.
Ochsenbauer Edward R.
Odom Robert E.
Oelrich Hermann
Oestergaard Ole
Oetlinger Tool Engineering Co. Inc.
Offmar S.r.l.
Okushita Masataka
Oliver Ronald R.
Ondrus Michael J.
Oplatek Oy
Osteen William Belmont
Otor Societe Anonyme
Otto E. Franson
Otto Jonathan K.
Otto Vogl
Owen Edwin Wyn