Ohio Aerospace Institute
Ohtake Masatoshi
Ohte Akira
Okada Yoshimichi
Okumura Eisuke
Oma Peter
On-Line Technologies Inc
Onoda Yoshihto
Optical Coherence Technologies, Inc.
Optical Technologies, Incorporated
Optiphase, Inc.
Opto Produkte AG
Optodyne, Inc.
Optoplan AS
Osaka Seimitsu Kikai Co., Ltd.
Otis Linda L.
Otsuka Masaru
Ottens Gregory J.
Oyen Wiggs Green & Mutal
P.M.L-Particles Monitoring Technologies, Ltd.