Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6062719 | High efficiency extruder | Forest Busby, Ray A. Herring, Richard O. Kirk | 2000-05-16 |
| 6022133 | Multiple-screw extruder | Ray A. Herring, Richard O. Kirk, Forest Busby | 2000-02-08 |