Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7063061 | Liquid quantity visual confirmation device and reservoir-forming member | Yoshiaki Nagao, Toshio Takahashi, Liu Yumin | 2006-06-20 |
| 6925970 | Air-cooled four-stroke internal combustion engine | Yumin Liu, Masahiko Iizuka, Yoshiaki Nagao | 2005-08-09 |