Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4839314 | Chemically durable, high index, low density glasses | Jean P. Mazeau | 1989-06-13 |
| 4822758 | Medium refractive index glass suitable for ophthalmic applications | Jean P. Mazeau | 1989-04-18 |