Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4831375 | Two-wire communication apparatus | — | 1989-05-16 |
| 4463350 | Communication system having designated transmission lines | Kozo Edanami, Seiji Onoki, Tatsuya Izumina, Yasuo Kumeda | 1984-07-31 |