Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5683774 | Durable, tamper resistant security laminate | Douglas K. Fossum | 1997-11-04 |
| 5658411 | Durable security laminate with hologram | — | 1997-08-19 |
| 5656360 | Article with holographic and retroreflective features | Shih-Lai Lu | 1997-08-12 |
| 5629093 | Transparent multilayer film and its use for protection of data on documents as well as a tamper-proof label | Katharina J. Bischof, Luigi Pastore, Wilhelm Kuester | 1997-05-13 |