Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5024909 | Dry film process for altering wavelength response of holograms | William K. Smothers, Mark Armstrong | 1991-06-18 |
| 4959283 | Dry film process for altering wavelength response of holograms | William K. Smothers, Mark Armstrong, Torence J. Trout | 1990-09-25 |