Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4276859 | Pressure lubrication for internal combustion engines | Achim zur Nieden | 1981-07-07 |
| 4239026 | Pressure lubrication for internal combustion engines | Achim Z. Nieden | 1980-12-16 |