Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6772726 | Multiple-position, operator-carried, four-stroke engine | Shiro Kawamoto, John D. Sheldon, Yoichi Imgawa | 2004-08-10 |
| 6374796 | Multiple-position, operator-carried, four-stroke engine | Shiro Kawamoto, John D. Sheldon, Yoichi Imgawa | 2002-04-23 |
| 6039020 | Multiple-position, operator-carried, four-stroke engine | Shiro Kawamoto, John D. Sheldon, Yoichi Imgawa | 2000-03-21 |