Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885856 | Optical prism display device | — | 1989-12-12 |
| 4832443 | Fibre optic cable having a layer of a polyethylene composition and process of making same | Denis J. McMahon | 1989-05-23 |