Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871228 | Image transfer apparatus utilizing optical fibers | — | 1989-10-03 |
| 4807209 | Record carrier body with a follow-on track and apparatus for recording information thereon | Pieter Jacob Kramer | 1989-02-21 |