Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4385753 | Tuyere for the simultaneous and separate introduction of at least one gas and one powder material | Pierre Leroy, Maurice Deschamps | 1983-05-31 |
| 4243211 | Tuyere for use in refining liquid metals | Pierre Leroy, Jean-Paul Bastien | 1981-01-06 |