Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6253996 | Medium handling apparatus | Ryuji Ishii, Sadao Sone | 2001-07-03 |
| 6092798 | Ticket issuing apparatus | Takahiro Amada, Ryuji Ishii, Sadao Sone, Masatoshi Kawaji, Takashi Okada | 2000-07-25 |