Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4943214 | Two-shaft type rotary machine having a tip circle diameter to shaft diameter within a certain range | Ritsuo Kikuta, Katsuaki Usui | 1990-07-24 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4943214 | Two-shaft type rotary machine having a tip circle diameter to shaft diameter within a certain range | Ritsuo Kikuta, Katsuaki Usui | 1990-07-24 |