Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4835856 | Piston ring manufacturing method | — | 1989-06-06 |
| 4722671 | Cylinder block for a refrigeration compressor | Shigemi Shimizu | 1988-02-02 |
| 4693674 | Cylinder head for refrigerant compressor | Isamu Fukai | 1987-09-15 |