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| Number | Title | Issue Date |
| 5458853 | Breath analysis device A dual breath analysis device having a passive first mode of testing and analysing an exhaled breath sample without the use of a mouthpiece, and a second mode of testing and analysing a second breath sample through a mouthpiece apparatus when the first mo... | 10/17/1995 |
| 4926164 | Vehicle breath monitoring device The present invention relates to vehicle breath monitors, and in particular to a vehicle breath monitoring system which either inhibits the starter motor solenoid of a motor vehicle or gives other indication when a driver's breath sample has an alcohol le... | 05/15/1990 |
