Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4843870 | Cylinder-by-cylinder engine pressure and pressure torque waveform determination utilizing crankshaft speed fluctuations | John O'Higgins | 1989-07-04 |
| 4807151 | Electrical technique for correcting bridge type mass air flow rate sensor errors resulting from ambient temperature variations | — | 1989-02-21 |