Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4938524 | Semi-truck trailer gooseneck and curtain side improvements | Martin Straub, David A. Logan, James D. Davis | 1990-07-03 |
| 4558886 | Fluid circuit means for elevating the rear end of an air ride truck trailer | — | 1985-12-17 |
| 4437696 | Movable truck bumper | — | 1984-03-20 |