Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4832762 | Method for producing thin steel sheet of high magnetic permeability | Kazuhide Nakaoka, Yoshikazu Takada | 1989-05-23 |
| 4819069 | Television signal selection device | — | 1989-04-04 |
| 4805230 | Tuning method | — | 1989-02-14 |