Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4853504 | Triple action pressure switch apparatus | Hirayoshi Suzuki, Keiji Sasaki | 1989-08-01 |
| 4835980 | Method for controlling refrigerating system | Reinosuke Oyanagi | 1989-06-06 |
| 4827094 | Dual-action pressure switch apparatus | Keiji Sasaki, Hirayosho Suzuki | 1989-05-02 |