Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4829956 | Method and apparatus for detecting discrete levels of detonation in an internal combustion engine | Bryce H. Rehn, Ronald J. Penick, Daniel W. Esters | 1989-05-16 |
HB
Harold A. Baker
Overall (1989): #109,068 of 140,708Top 80%
1
Patents 1989