Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6813921 | Method for rolling metal material into a metal strip | Dan Hall, Ilpo Koppinen, George E. Mayer | 2004-11-09 |
| 6677561 | Coil for induction heating of a strip or another elongate metal workpiece | Ilpo Koppinen | 2004-01-13 |