Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5701743 | Pulse tube refrigerator | Yasumasa Hagiwara | 1997-12-30 |
| 5689959 | Pulse tube refrigerator and method of using the same | Yasumasa Hagiwara | 1997-11-25 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5701743 | Pulse tube refrigerator | Yasumasa Hagiwara | 1997-12-30 |
| 5689959 | Pulse tube refrigerator and method of using the same | Yasumasa Hagiwara | 1997-11-25 |