Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5077742 | Error-corrected facsimile communication control system | Shigetaka Tanaka, Takeshi Ukegawa | 1991-12-31 |
| 4989232 | Device for processing digital signal in audio-frequency bandwidth | — | 1991-01-29 |
| 4868852 | Facsimile machine having an output level adjusting function | — | 1989-09-19 |