Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4330886 | Automatic telephone exchange system for both speech signals and data transfer | Kazuhiko Hanawa, Kiyoshi Urui | 1982-05-18 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4330886 | Automatic telephone exchange system for both speech signals and data transfer | Kazuhiko Hanawa, Kiyoshi Urui | 1982-05-18 |