Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4823309 | Data processing system with improved output function | Keiji Matsumoto | 1989-04-18 |
| 4728822 | Data processing system with improved output function | Keiji Matsumoto | 1988-03-01 |