Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9127431 | Manhole security cover | Thomas R. Lanham, Wayne A. Hemmerling, Andrew D. Trank, Jeffrey R. Sullivan, Eric R. Nolle | 2015-09-08 |
| 8674830 | Manhole security cover | Thomas R. Lanham, Andrew D. Trank, Jeffrey R. Sullivan | 2014-03-18 |