Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4818649 | Method for intensification and reflective read-out of underexposed film, radiographs, and the like | Malcolm Thackray | 1989-04-04 |
| 4818914 | High efficiency lamp | — | 1989-04-04 |