Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4333429 | Internal combustion engine | Masahiko Iiyama, Kenji Naito | 1982-06-08 |
| 4294205 | Internal combustion engine | Masahiko Iiyama, Kenji Naito | 1981-10-13 |
TS
Tsugio Sanka
Overall (All Time): #2,366,759 of 4,157,543Top 60%
2
Patents All Time