Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4875445 | Combustion chamber of a sub-chamber type internal combustion engine | Koji Imoto, Mataji Tateishi, Tadao Omura, Motoyuki Maekawa, Moritake Matusyama +1 more | 1989-10-24 |