Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6544470 | Feeding device for electrical shaft furnaces with an electrode-receiving central tube | Andreas Schüring, Guido GRUND, Joachim Lemke | 2003-04-08 |
| 6421366 | Method and device for supplying an electric arc melting furnace with current | Dirk Breker, Bernhard Espendiller, Guido GRUND | 2002-07-16 |