Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5353749 | Boiler design | Theodore C. Fuhrman, Jr. | 1994-10-11 |
| 4504217 | Low excess air burner having a movable venturi | Richard E. Winschel, deceased, Fred Heil | 1985-03-12 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5353749 | Boiler design | Theodore C. Fuhrman, Jr. | 1994-10-11 |
| 4504217 | Low excess air burner having a movable venturi | Richard E. Winschel, deceased, Fred Heil | 1985-03-12 |