Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5669341 | Valve operating system for internal combustion engine | Takashi Sugai, Takahiro Okuyama | 1997-09-23 |
AU
Akihito Ushirono
Overall (1997): #48,991 of 185,788Top 30%
1
Patents 1997