Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4311536 | Processes of phosphating surfaces of iron and of steel with manganese | Joseph Schapira, Jean-Claude Masson, Francois-Joseph Duboys | 1982-01-19 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4311536 | Processes of phosphating surfaces of iron and of steel with manganese | Joseph Schapira, Jean-Claude Masson, Francois-Joseph Duboys | 1982-01-19 |