Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4823056 | Pulse-width modulation drive circuit | Yoshihiko Watanabe, Tsuneyoshi Nagashita, Isamu Nomura, Kimito Kobayashi, Akio Namiki +7 more | 1989-04-18 |
SN
Susumi Niinuma
Overall (1989): #54,264 of 140,708Top 40%
1
Patents 1989