Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4284347 | Aperture-controlling device in a variable-scale photocopying machine | Tadaaki Kanno | 1981-08-18 |
| 4212531 | Aperture-controlling device in a variable-scale photocopying machine | — | 1980-07-15 |