Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4249489 | Multi-cylinder internal combustion engine with a valve shutoff | Roland Merkle | 1981-02-10 |
| 4245596 | Shifting means for actuating valve turn-off in multi-cylinder internal combustion engine | Roland Merkle | 1981-01-20 |