Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D303227 | Clock movement | — | 1989-09-05 |
| D303228 | Clock movement | Hidetsugu Ikeda | 1989-09-05 |
| 4862004 | Radiation dose measuring method and apparatus with nuclide discrimination function | Kiyoshi Koike, Hiroshi Tsuchiya | 1989-08-29 |
| 4796239 | Circuit unit for timepiece and process for fabricating the same | Satoru Yamauchi, Isato Watanabe, Isao Kondo | 1989-01-03 |