Ootuka Takayuki
Ophem John Van
Oppermann Winfried
Optimizer Control Corp.
Orbital Engine Co., (Australia) Pty Ltd.
Orbital Fluid Technologies, Inc.
Orikabe Kentaro
Osaki Masatoyo
Osaki Shunzaburo
Osawa Kouichi
Osella Massimo
Osmera Josef
Ostarello Joseph V.
Ostdiek Arthur J.
Osuka Isao
Ota Ken
Ota Tadaki
Otani Seiichi
Otani Tadahiko
Othuka Kazutoshi