Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4658804 | Movable hearth boiler with internal combustion and adjustable draught | Daniel Doublet, Arja Pynnonen | 1987-04-21 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4658804 | Movable hearth boiler with internal combustion and adjustable draught | Daniel Doublet, Arja Pynnonen | 1987-04-21 |