Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6619618 | Gate valve | Tsuneo Ishigaki, Kenji Waragai | 2003-09-16 |
| 6581635 | Pilot-type two-port vacuum valve | Masao Kajitani | 2003-06-24 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6619618 | Gate valve | Tsuneo Ishigaki, Kenji Waragai | 2003-09-16 |
| 6581635 | Pilot-type two-port vacuum valve | Masao Kajitani | 2003-06-24 |