Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887426 | Process and device for operating an exhaust gas burner | — | 1989-12-19 |
| 4852797 | Process for operating a fuel-operated heater and control arrangement for performing the process | — | 1989-08-01 |
| 4848083 | Exhaust gas unit for multicylinder diesel internal combustion engines | — | 1989-07-18 |