Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6489757 | Optical interface with low-voltage relay unit and high-voltage regulation unit | Eiji Yokoyama | 2002-12-03 |
| 5000589 | Bearing structures for motors | Masayuki Tsuzuku | 1991-03-19 |