Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5090388 | Air/fuel ratio control with adaptive learning of purged fuel vapors | Douglas R. Hamburg | 1992-02-25 |
| 5048492 | Air/fuel ratio control system and method for fuel vapor purging | Daniel V. Orzel, Douglas R. Hamburg | 1991-09-17 |
| 5048493 | System for internal combustion engine | Daniel V. Orzel, Douglas R. Hamburg | 1991-09-17 |