Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4268182 | Device for detecting travel condition of inkribbon for printers | Nagao Mizutani, Yasuo Okawara | 1981-05-19 |
| 4268913 | Electronic calculator watch | Tadahiko Nakagiri, Kunihiro Daigo, Toshiaki Oguchi, Minoru Natori, Toshikazu Hatuse +6 more | 1981-05-19 |
| 4257115 | Switch structure for electronic timepiece | Toshikazu Hatuse, Minoru Natori, Kouhei Kawanobe, Hiroshi Ogawa | 1981-03-17 |
| 4257118 | Watch case | Kunihiko Futaba, Atsumi Osagawa, Akira Hiraoka | 1981-03-17 |