Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4244649 | Optical system for providing visual aid for proper magnification selection | James D. Rees, David N. Redden, Craig A. Smith | 1981-01-13 |
| 4190355 | Facetted reflector | Stephen T. Avery, John A. Durbin, William L. Lama | 1980-02-26 |