Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D353676 | Cuvette for a chemical analyzer | Norman Kelln, Thomas O. Tiffany, Bruce Weyrauch | 1994-12-20 |
| 5314825 | Chemical analyzer | Bruce Weyrauch, Norman Kelln, Thomas O. Tiffany | 1994-05-24 |
| 5292484 | Cuvette and cuvette cartridge for a chemical analyzer | Norman Kelln, Thomas O. Tiffany, Bruce Weyrauch | 1994-03-08 |