Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5602656 | Apparatus and method for monitoring holographic light protection filters | John E. Wreede, Richard B. Upper, Darrell F. Hatch, Lane W. Cosner | 1997-02-11 |
| 5555108 | Holographic exposure prism | James E. Scott, John E. Wreede | 1996-09-10 |
| 5412195 | High security spectral code strip | — | 1995-05-02 |