Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4863803 | Composite product with a tubular casing for treating molten metal baths | — | 1989-09-05 |
| 4816068 | Composite article having a tubular sheath containing a compacted material, for the treatment of liquid metals, and process for the production of said article | Edmond Vachiery | 1989-03-28 |