Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4809294 | Electrical melting technique for glass | Philippe Daudin, Pierre Levy, Bernard Duplessis, Marcel Boivent | 1989-02-28 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4809294 | Electrical melting technique for glass | Philippe Daudin, Pierre Levy, Bernard Duplessis, Marcel Boivent | 1989-02-28 |