Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6089782 | Frame catcher adaptation for guardrail extruder terminal | Roger P. Bligh, Don L. Ivey, Hayes E. Ross, Jr. | 2000-07-18 |
| 5391016 | Metal beam rail terminal | Don L. Ivey, King K. Mak, Dean I. Sicking | 1995-02-21 |