Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7823681 | Breath alcohol ignition interlock device with biometric facial recognition with real-time verification of the user | Alex Yiu-Man Chan | 2010-11-02 |
| 7543472 | Calibration arrangement for breath testing equipment | Michael Rader | 2009-06-09 |
| 7400258 | Substance testing devices with photo identification | — | 2008-07-15 |
| 6956484 | Substance testing devices with photo identification | — | 2005-10-18 |