Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4296716 | Internal combustion engine for an automobile with a divided oil pan | Peter Hofbauer, Michael Willmann | 1981-10-27 |
| 4186714 | Sound insulated internal combustion engine | Hermann Danckert, Michael Willmann | 1980-02-05 |