Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4434494 | Contact electrode for melting and heating furnaces with DC plasma heating | Walter Lachner, Karlheinz Hofmann, Erich P/o/ tzsch, Fred Esser | 1984-02-28 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4434494 | Contact electrode for melting and heating furnaces with DC plasma heating | Walter Lachner, Karlheinz Hofmann, Erich P/o/ tzsch, Fred Esser | 1984-02-28 |