Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4836628 | Holographic film material | Anthony J. Bond, Fiona E. Davidson | 1989-06-06 |
| 4816360 | Multicolor holograms using gelatin as the binder and method for producing the same | David W. Butcher, John A. Clark | 1989-03-28 |