Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8652110 | Valve-equipped hand switch and chemical liquid introduction system | Tetsuya Yamamoto | 2014-02-18 |
| 6530907 | Channel switching apparatus | Atsushi Sugahara, Tetsuya Yamamoto | 2003-03-11 |