Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5615556 | Free-piston vuilleumier heat pump | Tetsuya Honda | 1997-04-01 |
KK
Kazuhiko Kawajiri
Overall (1997): #122,987 of 185,788Top 70%
1
Patents 1997