Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4401058 | Gas boiler able to operate in a sealed combustion circuit | Elie Charrier | 1983-08-30 |
| 4366778 | Gas boiler able to operate in a sealed combustion circuit | Elie Charrier | 1983-01-04 |