Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4878194 | Digital signal processing apparatus | Aiichi Katayama, Hitoshi Sekiya | 1989-10-31 |
| 4797936 | Waveform sequence trigger system | Aiichi Katayama, Hitoshi Sekiya, Shoji Hiratsuka | 1989-01-10 |