Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4574341 | Current supply apparatus for an A.C. consumer | Kjeld Hellegaard | 1986-03-04 |
| 4572969 | Low power loss snubber for switching power transistors | Kjeld Hellegaard, Niels O. Jacobsen | 1986-02-25 |