Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4993690 | Electroslag remelting plant including an ingot mold and a hood | Otto W. Stenzel, Wolfram Diemar, Heiko Spengemann, Leo Emiljanow, Helmut Grof | 1991-02-19 |
| 4775981 | Melting furnace with weight-related control of the consumable electrode | Rudolf Randa, Otto W. Stenzel | 1988-10-04 |
| 4658404 | Induction furnace with a furnace bottom and a lid | Georg Sick, Otto W. Stenzel, Hans-Johann Kemmer | 1987-04-14 |