Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D499741 | Selective portions of a internal combustion engine | Masahiro Aketa, Wataru Iwanaga, Yuzo Umeda | 2004-12-14 |
| D494191 | Internal combustion engine | Masahiro Aketa, Wataru Iwanaga, Yuzo Umeda | 2004-08-10 |