Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857211 | Cleaning of filter surfaces | Louis Rivoirard | 1989-08-15 |
| 4850426 | Gas/liquid heat exchanger with condensation | Lucien Fayolle, Patrick Mangin | 1989-07-25 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857211 | Cleaning of filter surfaces | Louis Rivoirard | 1989-08-15 |
| 4850426 | Gas/liquid heat exchanger with condensation | Lucien Fayolle, Patrick Mangin | 1989-07-25 |