Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859161 | Gear pump | Hideo Teruyama | 1989-08-22 |
| 4849749 | Electronic lock and key switch having key identifying function | Masaaki Fukamachi, Nobuyuki Onitsuka, Kazuhiro Sakata | 1989-07-18 |