Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888808 | Digital equalizer apparatus enabling separate phase and amplitude characteristic modification | Masaharu Matsumoto, Katsuaki Satoh, Akihisa Kawamura | 1989-12-19 |
SI
Seiichi Ishikawa
Overall (1989): #58,541 of 140,708Top 45%
1
Patents 1989