Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880453 | Method for making glass articles with defect-free surfaces and soluble glasses therefor | Frank Coppola, William Paul Ryszytiwskyj | 1989-11-14 |
| 4855260 | Glasses exhibiting low thermal coefficients of elasticity | Henry E. Hagy | 1989-08-08 |
| 4824808 | Substrate glass for liquid crystal displays | — | 1989-04-25 |