Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4564420 | Coke oven battery | Heinrich Spindeler, Folkard Wackerbarth, Helmut Dohle, Horst Althaus | 1986-01-14 |
| 4357211 | Air control arrangement for regeneratively-heated coke ovens | Folkard Wackerbarth, Gerd Halbherr | 1982-11-02 |