Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4305690 | Delivery tray return mechanism for a bale wagon | L. Dennis Butler, Donald M. Grey, Randall E. Zipser | 1981-12-15 |
| 4289436 | Delivery tray release mechanism for a bale wagon | Randall E. Zipser | 1981-09-15 |
| 4271958 | Shuttle cross conveyor | — | 1981-06-09 |