Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4977870 | Internal combustion engine | Hiroshi Hashimoto, Tatsuo Aruga, Eiichi Fujisawa | 1990-12-18 |
YO
Yoshinari Obana
Overall (All Time): #3,917,289 of 4,157,543Top 95%
1
Patents All Time