Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9561708 | Roll-screen device | Akio Yamada | 2017-02-07 |
| 9067479 | Roller shade | Akio Yamada | 2015-06-30 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9561708 | Roll-screen device | Akio Yamada | 2017-02-07 |
| 9067479 | Roller shade | Akio Yamada | 2015-06-30 |