Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4321792 | Device for purifying the exhaust gases of an internal combustion engine | — | 1982-03-30 |
| 4190031 | Devices for re-cycling the exhaust gases of an internal combustion engine | Jacques Sigwald | 1980-02-26 |
| 4187742 | Control of an automatic gearbox in an automobile | — | 1980-02-12 |