Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4658978 | Top entry ball valve and a clamp therefor | Morio Ikematsu, Tohru Wada, Tohru Nakanishi | 1987-04-21 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4658978 | Top entry ball valve and a clamp therefor | Morio Ikematsu, Tohru Wada, Tohru Nakanishi | 1987-04-21 |