Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8137190 | Game server device, game terminal device, secondary game management system, and secondary game management method | Yasuyuki Nagatomo, Masakazu Shibamiya, Kazuma Konishi | 2012-03-20 |