Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4835492 | Voltage controlled oscillator having constant tuning bias voltage | Akira Usui, Kazuhiko Kubo, Hiroyuki Nagai, Tetsuo Kutsuki | 1989-05-30 |
| 4817195 | Channel selection apparatus having automatic frequency compensation for transmission frequency error | Kazuhiko Kubo, Akira Usui, Minoru Miyata, Hiroyuki Nagai, Tadashi Yamada | 1989-03-28 |