Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4426159 | Electronic time keeping device | Yukio Kido, Shigeru Katoh, Hitoshi Tsutsui | 1984-01-17 |
KK
Kazumitu Kosaka
Overall (All Time): #4,028,065 of 4,157,543Top 100%
1
Patents All Time