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| 1993 || Looking Glass || Polhemus Labs || $55000 || 1280x1024 (variable, used multiple displays), colour. || HMD
| 1993 || Looking Glass || Polhemus Labs || $55000 || 1280x1024 (variable, used multiple displays), colour. || HMD
|-
|-
−
| 1989 || Private Eye || # || $795 (per eye) || 720x280, monochrome. || Mono
+
| 1989 || Private Eye || || $795 (per eye) || 720x280, monochrome. || Mono
|-
|-
| || HMD 121 (augmented reality) || Virtual Reality Inc. || $60,000 || 1280x1024, monochrome || HMD
| || HMD 121 (augmented reality) || Virtual Reality Inc. || $60,000 || 1280x1024, monochrome || HMD