Issued Patents 2019
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10260656 | Vacuum valve and vacuum pressure control system using the same | Minoru Ito, Masayuki Watanabe | 2019-04-16 |
| 10167958 | Vacuum pressure control apparatus | Yasunori Nishimura, Masayuki Watanabe | 2019-01-01 |