Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4822384 | Oxygen enriching apparatus with means for regulating oxygen concentration of oxygen enriched gas | Akira Kato, Masamichi TAMADA | 1989-04-18 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4822384 | Oxygen enriching apparatus with means for regulating oxygen concentration of oxygen enriched gas | Akira Kato, Masamichi TAMADA | 1989-04-18 |