Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4707408 | Roll for use in business machine | Takumi Ishiwaka | 1987-11-17 |
| 4465388 | Ink ribbon cartridge pinch roller | — | 1984-08-14 |
| 4358505 | Ink roller and a method of producing the same | Tsuneaki Narumiya, Take Sato | 1982-11-09 |