Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4856465 | Multidependent valve timing overlap control for the cylinders of an internal combustion engine | Helmut Denz | 1989-08-15 |
MP
Martin Person
Overall (1989): #79,351 of 140,708Top 60%
1
Patents 1989