Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5324353 | Zinc sulfide bodies having improved optical transmittance characteristics and mechanical characteristics | Joseph M. Wahl, Randal W. Tustison | 1994-06-28 |
| 5281465 | Method of strengthening an optical body by diffusion of material to the depth of structural flaws formed in such body | Joseph M. Wahl, Randal W. Tustison, Charles B. Willingham | 1994-01-25 |