Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871375 | Fuels for Otto engines | Knut Oppenlaender, Hans-Henning Vogel | 1989-10-03 |
FM
Franz-Dieter Martischius
Overall (1989): #114,429 of 140,708Top 85%
1
Patents 1989