Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11204056 | Nut | Toru Nakayama, Naohiro Ishizawa | 2021-12-21 |
| 11092216 | Speed reduction ratio automatic switching device | Naohiro Ishizawa | 2021-08-17 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11204056 | Nut | Toru Nakayama, Naohiro Ishizawa | 2021-12-21 |
| 11092216 | Speed reduction ratio automatic switching device | Naohiro Ishizawa | 2021-08-17 |