Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883525 | Glass-ceramic support for fusing and sagging ophthmalmic multifocal lenses | Harry L. Burke | 1989-11-28 |
| 4842632 | Method of making multifocal lens blanks | — | 1989-06-27 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883525 | Glass-ceramic support for fusing and sagging ophthmalmic multifocal lenses | Harry L. Burke | 1989-11-28 |
| 4842632 | Method of making multifocal lens blanks | — | 1989-06-27 |