Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4830580 | Two-stage air compressor unit | Satoshi Ogura | 1989-05-16 |
| 4811651 | Spring brake cylinder | Osamu Akamatsu | 1989-03-14 |
| 4812148 | Arrangement for controlling the removal of moisture from a two-cylinder type moisture remover | Masaaki Kitaue | 1989-03-14 |
| 4796513 | Spring brake cylinder | Osamu Akamatsu | 1989-01-10 |