Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4553924 | Jackshaft controlled boiler combustion control system | Robert L. Nelson | 1985-11-19 |
| 4551088 | Combustion control system | — | 1985-11-05 |
| 4486166 | Jackshaft controlled boiler combustion control system | Robert L. Nelson | 1984-12-04 |
| 4479774 | Combustion control system | — | 1984-10-30 |