Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5669341 | Valve operating system for internal combustion engine | Akihito Ushirono, Takashi Sugai | 1997-09-23 |
TO
Takahiro Okuyama
Overall (1997): #71,156 of 185,788Top 40%
1
Patents 1997