Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4485602 | Wall panel positive alignment device | David L. VanderKooi | 1984-12-04 |
| 4375907 | Flipper door assembly | David L. Vander Kooi | 1983-03-08 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4485602 | Wall panel positive alignment device | David L. VanderKooi | 1984-12-04 |
| 4375907 | Flipper door assembly | David L. Vander Kooi | 1983-03-08 |