Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4741808 | Coke oven door | Wilhelm Holz, Helmut Lukaszewicz, Mutien-Marie Renverse | 1988-05-03 |
| 4676873 | Coke oven door | Mutien-Marie Renverse | 1987-06-30 |
| 4295938 | Coke-oven door assembly | — | 1981-10-20 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4741808 | Coke oven door | Wilhelm Holz, Helmut Lukaszewicz, Mutien-Marie Renverse | 1988-05-03 |
| 4676873 | Coke oven door | Mutien-Marie Renverse | 1987-06-30 |
| 4295938 | Coke-oven door assembly | — | 1981-10-20 |