Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4216759 | Auxiliary heater for vehicles | Reiner Friedl, Dieter Zeus, Friedrich Widemann | 1980-08-12 |
| 4211365 | Motor vehicle auxiliary heater | Reiner Friedl, Karl Dworschak | 1980-07-08 |