Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5639217 | Splitter-type impeller | Yukio Ohtsuki | 1997-06-17 |
AO
Akio Onzuka
Overall (All Time): #3,718,063 of 4,157,543Top 90%
1
Patents All Time