Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4838222 | Combustion chamber for internal combustion engines | Naoki Yanagisawa, Noriyuki Sakurai | 1989-06-13 |
| 4799465 | Combustion chamber for internal combustion engines | Naoki Yanagisawa | 1989-01-24 |
| RE32839 | Balustrade of passenger conveyor | Cyuichi Saito | 1989-01-24 |