Biochem (BCI)
Criticare (CSI)
Critikon - Sensormedics
Datascope
Datex (Datex-Ohmeda)
Draeger
Hewlett-Packard (Philips Medical)
Invivo
Marquette (GE-Marquette) Ohmeda (Datex-Ohme)
Nihon-Kohden
Nonin
Novametrix - SpaceLabs