Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4881948 | Gas shutoff apparatus | Shinichi Nakane, Takashi Uno, Shinzo Kato, Mitsuo Namba, Reppei Uematsu | 1989-11-21 |
| 4805874 | Valve casing for use in a butterfly valve | Katsunobu Miyake, Kenji Ikoma | 1989-02-21 |