Issued Patents 1989
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885653 | Disk cartridge with a hub having an outsert molded control ring | — | 1989-12-05 |
| 4868701 | Recording disc assembly | — | 1989-09-19 |
| 4851947 | Improved disk cartridge including a shutter for opening and closing head entry apertures | — | 1989-07-25 |
| 4851948 | Disk cartridge with shutter biasing device | Minoru Fujita | 1989-07-25 |
| 4849844 | Disk cartridge | — | 1989-07-18 |
| 4839766 | Disk cartridge with improved shutter moving mechanism | — | 1989-06-13 |
| 4831478 | Disc drive assembly for supporting a recording disc | Hiroshi Maruyama | 1989-05-16 |