Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11745968 | Sheet feed shaft, manufacturing device for the same, and method for manufacturing the same | Masahide Tsukada | 2023-09-05 |
| 7392586 | Sheet feed shaft | Sakae Tsukada | 2008-07-01 |
| 6540218 | Sheet feed shaft, apparatus for manufacturing same and method for manufacturing same | Sakae Tsukada | 2003-04-01 |
| 6532661 | Sheet feed shaft, apparatus for manufacturing same and method for manufacturing same | Sakae Tsukada | 2003-03-18 |