Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882717 | Charging circuit for an analog electronic timepiece | Masahito Yoshino | 1989-11-21 |
| 4873677 | Charging apparatus for an electronic device | Kenji Sakamoto, Nobuo Ishikawa | 1989-10-10 |