Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6321661 | Railway freight car metal floor | Michael W. DiLuigi, Charles D. Womack | 2001-11-27 |
| 6318275 | Railway freight car metal floor | Michael W. DiLuigi, Charles D. Womack | 2001-11-20 |
| 6112671 | Railway freight car metal floor | Michael W. DiLuigi, Charles D. Womack | 2000-09-05 |
| 5918549 | Railway freight car metal floor | Michael W. DiLuigi, Charles D. Womack | 1999-07-06 |