Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882723 | Device for optically scanning a rotating disc | — | 1989-11-21 |
| 4870508 | Record carrier body with an optical servo track and optical apparatus for writing and reading information from the carrier | Wilhelm J. Kleuters | 1989-09-26 |
| 4864118 | Optical scanning unit with tracking error detection | Willem G. Opheij, Gerard Van Engelen | 1989-09-05 |
| 4796245 | Optical disc reader having lens mounting with improved positioning control | Antonius A. M. van Alem | 1989-01-03 |