Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5969302 | Lift control mechanism and method | Kazumi Nishizawa, Hitoshi Fujisawa | 1999-10-19 |
| 5864101 | Lift control mechanism and method | Kazumi Nishizawa, Hitoshi Fujisawa | 1999-01-26 |
| 5845494 | Lift control method | Kazumi Nishizawa, Hitoshi Fujisawa | 1998-12-08 |
| 5680761 | Hydraulic oil power unit including improved switching device | Kimio Hada, Kazumi Nishizawa | 1997-10-28 |