Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5617821 | 4-cycle engine | Masaki Tsunoda, Shigeaki Kuwabara | 1997-04-08 |
SS
Sadafumi Shidara
Overall (1997): #80,759 of 185,788Top 45%
1
Patents 1997