Oonuma Isamu
Oosako Takashi
Oota Mituhiro
Ootomo Hideo
Ootsuka Yukio
Opticast AB
Orii Shin
Orlov Georgy M.
Orlovsky Jury V.
Orton Keith
Osborn Steve
Osborn Manufacturing Corporation
Osborne Richard J.
Oskar Frach Werkzeugbau GmbH & Co. KG
Osprey Metals Ltd.
Osswald Jean-Marie
Ostaszewski Wojciech
Ostrovski Vassil N.
Ostrowski Richard C.
Oswald Arno