Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4372532 | Valve | Ryozo Yamamoto, Junzo Oku | 1983-02-08 |
KY
Keiichi Yanase
Overall (All Time): #4,048,386 of 4,157,543Top 100%
1
Patents All Time