Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5653104 | Engine air/fuel control system with adaptively alignment of a catalytic converter's peak efficiency window | Douglas R. Hamburg | 1997-08-05 |
| 5598703 | Air/fuel control system for an internal combustion engine | Douglas R. Hamburg | 1997-02-04 |