Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4973885 | Low voltage direct current (DC) powered fluorescent lamp | — | 1990-11-27 |
| 4690141 | Fresnel lens light applicator | John C. Castel | 1987-09-01 |
| 4453547 | T-Wave inhibiting system | John C. Castel | 1984-06-12 |