Issued Patents All Time
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 (All Time): #3,725,184 of 4,157,543Top 90%
1
Patents All Time