Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5280833 | Turn conveyor with reduced friction feature | — | 1994-01-25 |
| 5203861 | Plastic sprocket wheel with replaceable teeth | Guy L. Irwin | 1993-04-20 |
| 5139135 | Reduced radius spiral conveyor with plastic belts | Guy L. Irwin | 1992-08-18 |