Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5327806 | Apparatus for shear-cutting a stack of amorphous steel strips | — | 1994-07-12 |
| 5315754 | Method of making a transformer core comprising strips of amorphous steel wrapped around the core window | Willi Klappert | 1994-05-31 |
| 5230139 | Method of making a transformer core comprising strips of amorphous steel wrapped around the core window | Willi Klappert | 1993-07-27 |