Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882446 | Metal dihydrocarbyl-dithiophosphyl-dithiophosphates their manufacture and use as additives for lubricants | Maurice Born, Jacques Lallement, Pierre Marchand, Guy Parc | 1989-11-21 |