Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5666808 | Operating valve assembly with pressure compensation valve | Koji Yamashita, Teruo Akiyama, Shinichi Shinozaki | 1997-09-16 |
| 5659200 | Semiconductor device having radiator structure | Michio Sono, Masashi Takenaka, Masanori Yoshimoto | 1997-08-19 |