Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4825660 | Cryogenic refrigerator | — | 1989-05-02 |
NO
Nobuo Okumura
Overall (1989): #72,623 of 140,708Top 55%
1
Patents 1989