Oderwald Michiel Peter
Oechsle Walter
Offerdahl David
Officine Bieffebi S.r.l.
Officine Bieffebi S.R.L.
Officine Bieffebi SRL
Offucine Meccaniche Peruzzo Adriano
Ogano Takeo
Ogasawara Hiroyuki
Ogden Metalworks, Inc.
Ogilby Renault LLP
Ohkanda Masao
Ohkura Hideo
Ohlemeyer Heinrich
Oka Ken K.
Oka Ken Kengi
Okajima Yasuo
Okamoto Rokuro
Okamoto Suguru
Okura Hideo