Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6999714 | Test administration system using the internet | David Pfenninger | 2006-02-14 |
| 6996367 | Test administration system using the internet | David Pfenninger | 2006-02-07 |
| 6681098 | Test administration system using the internet | David Pfenninger | 2004-01-20 |