Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4812156 | Process for manufacturing glass objects | Daniel Goumy | 1989-03-14 |
| 4806137 | Process for lubricating a surface such as a mould for the manufacture of a glass object | — | 1989-02-21 |