Opsigal Control Systems Ltd.
Optab Optronikinnovation
Opti Products Incorporated
OpticNet, Inc.
Optima Systems, Inc.
OptiMetrics, Inc.
Optimol Instruments GmbH
Optimol-Olwerke GmbH
Optiscan PTY Ltd.
Optoplan A.S.
Optosense Technologies, Inc.
Optsonic Research Associates, Inc.
Optsonic Research Associates, Ltd.
Or Arthur C.
Oram James W.
Oram John Anderson
Orbach Dieter
Orban Jacques J. H.
Orbell Richard B.
Orbishpere Laboratories Neuchatel SA