Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D923144 | Manifold type electromagnetic valve | Seietsu Sumiyoshi | 2021-06-22 |
| D911491 | Manifold type electromagnetic valve | Seietsu Sumiyoshi | 2021-02-23 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D923144 | Manifold type electromagnetic valve | Seietsu Sumiyoshi | 2021-06-22 |
| D911491 | Manifold type electromagnetic valve | Seietsu Sumiyoshi | 2021-02-23 |