Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4500829 | Advance and retard phase-shift transformer | Theodore R. Specht | 1985-02-19 |
| 4493016 | Rectifier transformer | Theodore R. Specht | 1985-01-08 |
| 4249170 | Annunciator | Ronald M. Stefanick | 1981-02-03 |