Issued Patents 1989
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4890272 | Apparatus for correcting photodetector signals in a system for retrieving information from an optical recording medium | — | 1989-12-26 |
| 4857719 | Flat type optical head for focusing a light beam onto an optical memory | — | 1989-08-15 |
| 4835762 | Optical memory device and system | — | 1989-05-30 |
| 4825064 | Apparatus for energizing a semiconductor laser array having a plurality of light beam emitting points | — | 1989-04-25 |
| 4804835 | Optical head having guide means with first and second polarizing surfaces | — | 1989-02-14 |
| 4797868 | Optical system employing a laser beam for focusing, tracking and transferring information signals with respect to a magneto-optical memory | — | 1989-01-10 |