Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6460456 | Stamp making apparatus and attachment thereof | Koji Sugiyama, Naohito Asai, Tetsuji Fuwa, Teruo Imamaki, Takashi Miki +1 more | 2002-10-08 |
| 6440549 | Printing sheet for stamp | Keiji Seo, Mitsunobu Suda, Koji Sugiyama | 2002-08-27 |