Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6508482 | Trailing arm axle/suspension system | Phillippi R. Pierce, Mohamad Bachir, William L. McGrath, John E. Ramsey, Joseph M. Ross | 2003-01-21 |
| 5996981 | Reduced size bushing for beam-type axle suspension system | — | 1999-12-07 |
| 5720489 | Movable subframe for tractor-trailers | Phillipi Randsome Pierce, John E. Ramsey | 1998-02-24 |
| 5642896 | Locking pins for movable subframe of tractor-trailers | Phillippi R. Pierce, John E. Ramsey | 1997-07-01 |
| 5366237 | Axle suspension systems | Michael J. Keeler, John E. Ramsey, Joseph M. Ross | 1994-11-22 |