Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8425152 | Arched culvert and method of manufacture | — | 2013-04-23 |
| 8425153 | Arched culvert and method of manufacture | — | 2013-04-23 |
| 6971495 | Mass flow hopper and method of manufacture | Thomas W. Hedrick | 2005-12-06 |