Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882079 | Piezoelectric ceramic materials | Eturo Yasuda | 1989-11-21 |
| 4838233 | Pilot injection system for fuel injection pump | Satoshi Hayashi, Hitoshi Niwa, Hirokatsu Mukai | 1989-06-13 |