Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4850828 | Plunger pump of quick pressure-rise type | — | 1989-07-25 |
| 4827839 | Hydraulic overload protector for mechanical press | Masatake Miyajima | 1989-05-09 |
| 4823687 | Die-height adjusting device of mechanical press | Yoshimitsu Tsutsui | 1989-04-25 |
| 4812109 | Apparatus for driving piston by fluid pressure | — | 1989-03-14 |