Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4419572 | Check digit calculator | Mutsumi Takahashi, Toshio Nagase, Shosuke Sato, Hideshi Matsuzawa | 1983-12-06 |
| 4272674 | Check digit calculator | Mutsumi Takahashi, Toshio Nagase, Shosuke Sato, Hideshi Matsuzawa | 1981-06-09 |
| 4265173 | Numbering machine with check digit function | Mutsumi Takahashi, Toshio Nagase, Shosuke Sato | 1981-05-05 |