Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6288378 | Induction heating system with split resonance capacitance | Henry W. Koertzen | 2001-09-11 |
| 6211498 | Induction heating apparatus and transformer | Henry W. Koertzen | 2001-04-03 |