Issued Patents 1989
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868373 | Memory card comprising an optical memory disc and microelectronic memory component, and apparatus for transferring information to and from such card | Arie Huijser, Gary E. Thomas | 1989-09-19 |
| 4864118 | Optical scanning unit with tracking error detection | Gerard E. Van Rosmalen, Gerard Van Engelen | 1989-09-05 |
| 4862447 | Optical record carrier with surface layer extending to the center of a substantially circular information track structure therein | — | 1989-08-29 |
| 4835380 | Scanning device for an optical recording and/or reproducing apparatus | Josephus J. M. Braat | 1989-05-30 |
| 4826270 | Optical scanning apparatus | Louis-Marie H. Cobben | 1989-05-02 |
| 4810073 | Optical scanning apparatus | — | 1989-03-07 |
| 4810871 | Electronically adjustable position-sensitive radiation detector and optical systems using same | — | 1989-03-07 |