Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4903408 | Steel plate cutter | Itsuo Tagawa | 1990-02-27 |
| 4890798 | Structure crushing equipment | Itsuo Tagawa, Yukiharu Kanari, Takaharu Kozaki | 1990-01-02 |
| 4571968 | Steel frame shearing apparatus | Naotomo Kaneko, Takaharu Kozaki | 1986-02-25 |