Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D310348 | Engine generator | Masaaki Higuchi, Yasuo Otake, Yukinori Itoh | 1990-09-04 |
| D309597 | Engine generator | Masaaki Higuchi, Yasuo Otake, Yukinori Itoh | 1990-07-31 |
| 4660521 | Apparatus for changing the frequency of a dynamo engine | Masaaki Higuchi | 1987-04-28 |