Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4344318 | Undesirable combustion characteristic detector for spark-ignited internal combustion engines | Manfred Maass | 1982-08-17 |
| 4329871 | Undesirable combustion characteristic detection apparatus | Horst Grossner, Manfred Maass | 1982-05-18 |