Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6454522 | Impeller for circumferential current pump | Yasuyuki Sakamoto | 2002-09-24 |
| 6443692 | Impeller for circumferential current pump and method of forming the same | Yasuyuki Sakamoto, Yoichi Takeuchi | 2002-09-03 |