Issued Patents 2021
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10919382 | Rotary type extension/retraction device | Tsutomu Kato | 2021-02-16 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10919382 | Rotary type extension/retraction device | Tsutomu Kato | 2021-02-16 |