Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7976391 | Game system and replacement part | Tetsuo Ishida, Yasufumi Kasuya | 2011-07-12 |
| 6824463 | Number drawing apparatus and game machine therewith | Takashi Yamaguchi, Takashi Kumabe, Nobuhiro Goto, Takeshi Oginuma | 2004-11-30 |