Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9190205 | Integral mold for a transformer having a non-linear core | Joel A. Kern, Thomas A. Hartmann, Charlie Sarver | 2015-11-17 |
| 9190230 | Grounding switch | Charles W. Johnson, Claudio Ibarra, Charlie Sarver | 2015-11-17 |
| 8884732 | Dry-type network transformer | Charles W. Johnson | 2014-11-11 |
| 8729998 | Three-step core for a non-linear transformer | Thomas A. Hartmann | 2014-05-20 |