Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4823342 | Time division exchange system having functions of compressing and expanding information | Takashi Morita, Koji Hirai | 1989-04-18 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4823342 | Time division exchange system having functions of compressing and expanding information | Takashi Morita, Koji Hirai | 1989-04-18 |