Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6464203 | Swing-door gate valve | Tsuneo Ishigaki, Kenji Waragai | 2002-10-15 |
| 6390449 | Gate valve | Tsuneo Ishigaki, Kenji Waragai | 2002-05-21 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6464203 | Swing-door gate valve | Tsuneo Ishigaki, Kenji Waragai | 2002-10-15 |
| 6390449 | Gate valve | Tsuneo Ishigaki, Kenji Waragai | 2002-05-21 |