Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6619799 | Optical lens system with electro-active lens having alterably different focal lengths | Ronald D. Blum | 2003-09-16 |
| 6517203 | System, apparatus, and method for correcting vision using electro-active spectacles | Ronald D. Blum | 2003-02-11 |