Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4879207 | Safelight for silver halide light-sensitive photographic material | Yasuhiko Takamuki | 1989-11-07 |
| 4862706 | Ice making machine | Hideji Ohta | 1989-09-05 |
| 4831834 | Method of protecting a refrigerating apparatus | — | 1989-05-23 |