Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5609343 | Sealing rings for spool valves | Takumi Matsumoto, Shinichi Yoshimura | 1997-03-11 |
| 5597015 | Electromagnetic pilot type selector valve | Bunya Hayashi, Hideharu Sato, Takumi Matsumoto | 1997-01-28 |