Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889090 | Crankshaft drive of an internal-combustion engine of V-type | Johannes Werner, Rolf Heinrich | 1989-12-26 |
| 4886023 | Crankshaft drive of an internal-combustion engine of V-type | Johannes Werner, Rolf Heinrich | 1989-12-12 |