Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6810664 | Slotted spool valve | — | 2004-11-02 |
| 5646846 | Global positioning planter system | Douglas M. Bruce | 1997-07-08 |
| 4505472 | Astro capsule | Thomas L. Maring | 1985-03-19 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6810664 | Slotted spool valve | — | 2004-11-02 |
| 5646846 | Global positioning planter system | Douglas M. Bruce | 1997-07-08 |
| 4505472 | Astro capsule | Thomas L. Maring | 1985-03-19 |