Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4744138 | Method of manufacturing a high-voltage current transformer | Norbert Preissinger | 1988-05-17 |
| 4701738 | High-voltage current transformer | Norbert Preissinger | 1987-10-20 |