Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4846130 | Engine ignition timing with knock control by combustion pressure harmonic amplitude ratio | — | 1989-07-11 |
EJ
Edward J. Jensen
Overall (1989): #118,035 of 140,708Top 85%
1
Patents 1989