Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5329764 | Air/fuel feedback control system | Douglas R. Hamburg, Eleftherios M. Logothetis | 1994-07-19 |
| 5313791 | Method for detecting catalyst malfunctions | Douglas R. Hamburg | 1994-05-24 |
| 5291673 | Oxygen sensor system with signal correction | Douglas R. Hamburg, Wayne J. Johnson, Louis J. Sherry | 1994-03-08 |