Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6966135 | Pop-up greeting card presenting a media item | — | 2005-11-22 |
| 5987861 | Pea harvester | Allister T. Duncan | 1999-11-23 |
| 4706646 | Total counterflow heat exchanger | Paul O. Christianson | 1987-11-17 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6966135 | Pop-up greeting card presenting a media item | — | 2005-11-22 |
| 5987861 | Pea harvester | Allister T. Duncan | 1999-11-23 |
| 4706646 | Total counterflow heat exchanger | Paul O. Christianson | 1987-11-17 |