Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4872828 | Integrated furnace control and control self test | Eugene P. Mierzwinski, Stephen E. Youtz | 1989-10-10 |
| 4842510 | Integrated furnace control having ignition and pressure switch diagnostics | Stephen E. Youtz, Eugene P. Mierzwinski | 1989-06-27 |