Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4900337 | Method and apparatus for working molten glass | Michel Zortea, Gerard Dossier | 1990-02-13 |
| 4693740 | Process and device for melting, fining and homogenizing glass | Michel Zortea | 1987-09-15 |