Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5315491 | Reflecting and luminous layered material | Andrew B. Spencer, Bryan David Marsh | 1994-05-24 |
| 5300783 | Layered reflecting and luminous material | Andrew B. Spencer, Bryan David Marsh | 1994-04-05 |