Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4351291 | Glow plug | — | 1982-09-28 |
| 4307689 | Glow plug control circuit | Frank J. Raeske, Richard E. Callahan | 1981-12-29 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4351291 | Glow plug | — | 1982-09-28 |
| 4307689 | Glow plug control circuit | Frank J. Raeske, Richard E. Callahan | 1981-12-29 |