Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4300317 | Method of fitting ophthalmic lenses in spectacles frames | George T. Croft | 1981-11-17 |
| 4277916 | Lens chucking apparatus | — | 1981-07-14 |
| 4243304 | Convergence mechanism for binocular refracting instrument | — | 1981-01-06 |
| 4185896 | Refractor cross-cylinder apparatus | — | 1980-01-29 |