Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5661539 | Visual tool for assessing the ergonomic position of a video display terminal | — | 1997-08-26 |
| 5303022 | Lensometer with guided lens movement for progressive addition lens | William E. Humphrey, Charles E. Campbell | 1994-04-12 |
| 4222639 | Apparatus and system for analyzing fixation disparity | — | 1980-09-16 |