Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851930 | Magnetic recording and reproducing apparatus compensating for the deviation of H alignment during a variable speed reproduction | Takamitsu Aoki | 1989-07-25 |
| 4807049 | C-type comb filter with negative feedback | — | 1989-02-21 |