Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10767325 | Impact absorbing traffic noise barrier system | Eric C. Humphries | 2020-09-08 |
| 5268540 | Sound barrier absorption panel | — | 1993-12-07 |
| 5218805 | Post assembly and noise barrier wall | — | 1993-06-15 |
| 5119614 | Concrete post reinforcing apparatus | — | 1992-06-09 |