Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870514 | Disk drive circuit arrangement for the suppression of undesired index pulses | Katsuya Enami | 1989-09-26 |
| 4816934 | Power-saving read/write circuit for apparatus for digital data transfer with a magnetic disk | — | 1989-03-28 |
| 4809119 | Circuit arrangement for the determination of the constant speed rotation of a disklike record medium | Katsuya Enami | 1989-02-28 |