Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8940385 | Film with reinforced borders and edges | — | 2015-01-27 |
| 4385391 | Mechanism for opening electrode holders of electric smelting furnaces | Franz-Josef Hillers, Heinz Berentsen | 1983-05-24 |