Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5025891 | Escape for a building | Hiromitsu Naka, Yutaka Asai | 1991-06-25 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5025891 | Escape for a building | Hiromitsu Naka, Yutaka Asai | 1991-06-25 |