Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6762842 | Light analyzer apparatus | John Pfeifer, William Frederick | 2004-07-13 |
| 6493085 | Light analyzer apparatus | John Pfeifer, William Frederick, Stephen C. Fog | 2002-12-10 |
| 6444462 | Incubation system for an analyzer apparatus | John Pfeifer, William Frederick | 2002-09-03 |