Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5937807 | Early exhaust valve opening control system and method | Lester L. Peters, David A. Vittorio, P. Douglas Free, Amarjit S. Ghuman, Harold G. Weber | 1999-08-17 |
| 5755101 | Electronic turbocharger wastegate controller | Paul Douglas Free, Spencer C. Lewis, Jr. | 1998-05-26 |