Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8027093 | Optically variable devices | Christopher John Eastell, Roland Isherwood, Brian William Holmes | 2011-09-27 |
| 7903308 | Security device based on customized microprism film | Christopher John Eastell, Roland Isherwood | 2011-03-08 |