Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6802606 | Multifocal contact lens pairs | Jeffrey H. Roffman, Scott Durland | 2004-10-12 |
| 6802607 | Progressive cylinder ophthalmic lenses | Jeffrey H. Roffman, Ganesh Narayanan Kumar | 2004-10-12 |