Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4975032 | Roots type blower having reduced gap between rotors for increasing efficiency | Kiyoshi Arai, Tetsuo Fukagawa | 1990-12-04 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4975032 | Roots type blower having reduced gap between rotors for increasing efficiency | Kiyoshi Arai, Tetsuo Fukagawa | 1990-12-04 |