Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4844748 | Process for the chemical surface treatment of an aluminous product with a view to its phosphating | Jean Charbonnier, Alain Roche, Maurice Romand, Eric Sahakian | 1989-07-04 |