Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5623323 | Extra wide field ophthalmic lens | Robert D. Johnson, Martin A. Mainster | 1997-04-22 |
| 5589896 | Adjustable indirect ophthalmoscopy lens | Martin A. Mainster, Robert D. Johnson | 1996-12-31 |
| 5309187 | High magnification ophthalmic lens | Phillip J. Erickson, Gregory Heacock, Martin A. Mainster | 1994-05-03 |
| 5189450 | High magnification ophthalmic lens | Phillip J. Erickson, Gregory Heacock, Martin A. Mainster | 1993-02-23 |
| 5007729 | Wide angle ophthalmic lens | Phillip J. Erickson, Gregory Heacock, Martin A. Mainster | 1991-04-16 |