Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5700210 | Racket frame and process for producing the same | Kenjiro Takechi, Hitomi Kojo | 1997-12-23 |
YI
Yasuhiro Ishigaki
Overall (1997): #57,752 of 185,788Top 35%
1
Patents 1997