Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5303022 | Lensometer with guided lens movement for progressive addition lens | William E. Humphrey, Charles E. Campbell | 1994-04-12 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5303022 | Lensometer with guided lens movement for progressive addition lens | William E. Humphrey, Charles E. Campbell | 1994-04-12 |