Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4498863 | Feed forward combustion control system | Robert C. Hanson | 1985-02-12 |
| 4203300 | Horizontal direct fired water bath propane vaporizer | Robert C. Hanson | 1980-05-20 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4498863 | Feed forward combustion control system | Robert C. Hanson | 1985-02-12 |
| 4203300 | Horizontal direct fired water bath propane vaporizer | Robert C. Hanson | 1980-05-20 |