Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4895419 | Contact copying of reflection or volume holograms | James Doyle, Anthony I. Hopwood | 1990-01-23 |
| 4748097 | Method of preparing a hologram | John A. Clark, David W. Butcher | 1988-05-31 |
| 4720441 | Method of preparing a hologram | John A. Clark, David W. Butcher | 1988-01-19 |