Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5631648 | Signal compression or expansion circuit for mobile communication | Kazuo Kumano, Kazuhiro Takeda | 1997-05-20 |
| 5623224 | Communication circuit with voltage drop circuit and low voltage drive circuit | Yasushi Nakamoto | 1997-04-22 |