Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9803733 | Rotation device and power supply system | Keiko Kondo | 2017-10-31 |
| 9236779 | Rotation maintaining device | Keiko Kondo | 2016-01-12 |
| 8604628 | Rotation device | Keiko Kondo | 2013-12-10 |