Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5480100 | Apparatus for crushing concrete structures | Itsuo Tagawa | 1996-01-02 |
| 4890798 | Structure crushing equipment | Itsuo Tagawa, Yukiharu Kanari, Samon Kanno | 1990-01-02 |
| 4571968 | Steel frame shearing apparatus | Samon Kanno, Naotomo Kaneko | 1986-02-25 |