Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4847572 | Electronic tuning circuit for AM receiver | — | 1989-07-11 |
| 4837852 | Electronic tuning circuit for AM receiver which is easy to effect tracking adjustment | Noboru Takada | 1989-06-06 |