Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883030 | Combustion chamber of a two-stroke engine | Toshio Tanahashi, Toshio Itoh, Kazuhiro Itoh | 1989-11-28 |
| 4840147 | Combustion chamber of a two-stroke engine | Toshio Tanahashi, Norihiko Nakamura, Hiroshi Noguchi, Kenichi Nomura, Toyokazu Baika +5 more | 1989-06-20 |