Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8616331 | Panel assembly for traffic noise barrier wall | Eric C. Humphries, Stephen D. Barratt, Ray Stauffer, John H. Miller, Nathan Binette | 2013-12-31 |
| 7546900 | Panel assembly for traffic noise barrier wall | Eric C. Humphries, Stephen D. Barratt, Ray Stauffer, John H. Miller | 2009-06-16 |