Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6527495 | Universal adjustable wrecker body sub-frame and body panel assemblies | David F. Humphries | 2003-03-04 |
| 6290450 | Universal adjustable wrecker body sub-frame and body panel assemblies | David F. Humphries | 2001-09-18 |
| 6120235 | Universal adjustable wrecker body sub-frame and body panel assemblies | David F. Humphries | 2000-09-19 |
| 5697741 | Gull wing style openings for safety chain pockets | Steven C. Harris | 1997-12-16 |