Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5209153 | Portable hydraulically operated device incorporating automatic drain valve | Toshiyuki Kumazaki | 1993-05-11 |
| 5125324 | Portable hydraulically operated device incorporating automatic drain valve | Toshiyuki Kumazaki | 1992-06-30 |
| 4769911 | Pipe cutting device | — | 1988-09-13 |