Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5730305 | Crane safety apparatus | Yukio Tsutsumi | 1998-03-24 |
| 5645181 | Method for detecting a crane hook lifting distance | Yukio Tsutsumi | 1997-07-08 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5730305 | Crane safety apparatus | Yukio Tsutsumi | 1998-03-24 |
| 5645181 | Method for detecting a crane hook lifting distance | Yukio Tsutsumi | 1997-07-08 |