Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4826412 | Mechanically driven screw supercharger | Kazuo Kubo, Itsuro Nomura, Noboru Tsuboi | 1989-05-02 |
| 4812110 | Oil-free screw compressor with bypass of cooled discharged gas | Kazuo Kubo, Noboru Tsuboi, Ituro Nomura | 1989-03-14 |
| 4808095 | Screw vacuum pump | Noboru Tsuboi | 1989-02-28 |