Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5613418 | Multiple-stage hydraulic cylinder | — | 1997-03-25 |
| 5462259 | Tilting device for a D.C. arc furnace and process for emptying the furnace | — | 1995-10-31 |
| 4843614 | Metallurgical vessel | — | 1989-06-27 |
| 4730338 | Coupling construction for an electric furnace | — | 1988-03-08 |
| 4720838 | Contact connection between a contact electrode and a cooling medium and a current supply lines for an electrical melting furnace | — | 1988-01-19 |
| 4700355 | Electrical melting furnace exchangeable electrode assembly a method for changing a contact electrode assembly | — | 1987-10-13 |
| 4435812 | Electric furnace construction | Hubert Wolfgarten | 1984-03-06 |